Bump build number and update changelog

Closes #47

CHANGELOG-release.md

@@ -1,3 +1,57 @@
+## 2023.5
+This update adds new several Compose-related features, including the ability to edit posts, a share sheet extension, and a post language picker. See below for the full list of improvements and bugfixes.
+
+Features/Improvements:
+- Edit posts
+- Indicate edited posts in timestamp
+- Show post edit history from Conversation screen
+- Add Share Sheet extension
+- Add expanded attachment view on Compose screen
+    - Add an attachment, select the description text field, then tap the expand button
+    - Expanded view allows you to see the attachment while writing the description
+    - Allows playing back videos while writing description
+    - iOS 16: Allows zooming in to the attachment
+- Add language picker to the Compose screen
+- Improve Compose screen ducking behavior
+- Show reblogger's avatar on reblogged posts
+- Use system photo picker instead of custom interface
+- Improve hashtag search UI in Customize Timelines
+- Improve status collapse/expand animation on Notifications screen
+- Apply filters to Notifications screen
+- Improve performance when scrolling through timeline
+- Improve error messages when editing filters
+- Change favorite/reblog button order to match Mastodon UI
+- Gracefully handle unknown attachment types
+- iPadOS: Persist sidebar visibility across
+
+Bugfixes:
+- Fix scroll-to-top not working in in-app Safari
+- Fix inaccruate titles in certain error popups
+- Fix error decoding post HTML
+- Fix replied-to account not being the first @-mention
+- Fix "No Content" message on profiles using wrong background color
+- Fix reblogged posts appearing in Bookmarks
+- Fix spurious errors when loading timeline
+- Fix crash when displaying certain profiles
+- Fix crash when the server returns invalid notifications
+- Fix link previews not appearing in Notifications
+- Fix Notifications screen taking a long time to load
+- Fix deleted posts not being removed from Notifications screen
+- Fix crashes when switching between sidebar/tab-bar modes
+- Fix instance features not being detected on IDNA domains
+- Fix list/hashtag timelines missing controls when opened in new window
+- Fix reblog button being enabled on the user's own direct posts
+- Fix main post in Conversation flickering
+- Fix link card images not loading on Mastodon
+- Fix crash when editing filter with the Hide action
+- Fix certain remote status links not being resolved
+- Fix Handoff to iPad/Mac presenting new screen modally
+- GoToSocial: Fix decoding certain posts
+- Calckey: Fix decoding certain posts
+- iPadOS: Fix Compose window lacking a title
+- iPadOS: Fix keyboard focus highlight not showing
+- macOS: Fix sidebar keyboard shortcuts not working
+
 ## 2023.4
 Features/Improvements:
 - Add preference for non-pure-black dark mode

CHANGELOG.md

@@ -1,5 +1,161 @@
 # Changelog
 
+## 2023.5 (98)
+Bugfixes:
+- Fix broken animation when opening/closing expanded attachment view on Compose screen
+
+## 2023.5 (97)
+Features/Improvements:
+- Change favorite/reblog button order to match Mastodon
+- Use QuickLook as a fallback for uknown attachment types
+
+Bugfixes:
+- Fix crash when adding drawing attachment
+
+## 2023.5 (96)
+Features/Improvements:
+- Resolve Mastodon's remote status links
+
+Bugfixes:
+- Fix handoff to iPad/Mac presenting new screen modally rather than navigating
+- Fix crash if timeline gap cell is accessibility-activated after leaking
+- Fix various crashes when multiple Compose/Drafts screens are opened
+- Delete orphaned draft attachments
+- Fix deleted posts not getting removed from Notifications screen
+- Fix replied-to status not changing when selecting draft
+
+## 2023.5 (94)
+Features/Improvements:
+- Apply filters to Notifications screen
+
+Bugfixes:
+- Fix editing posts not working on Akkoma
+- Fix editing Markdown/HTML posts
+- Fix crash when editing filter with Hide action
+
+## 2023.5 (91)
+Features/Improvements:
+- Improve performance when scrolling through timeline
+- Improve error messages when editing filters
+- Enable editing posts on Pleroma 2.5+
+
+Bugfixes:
+- Fix share sheet extension not working with Apple News
+- Fix crash when sharing certain photos with share extension
+- Fix reblog button being enabled on Direct posts
+- Fix expanded statuses collapsing when opening Conversation
+- Fix main post in Conversation flickering when context loaded
+- Fix link card images not loading on Mastodon
+
+## 2023.5 (89)
+This build is a hotfix for an issue loading notifications in certain circumstances. The changelong for the previous build (adding post editing) is included below.
+
+## 2023.5 (85)
+This build adds support for editing posts and showing edit timestamps and history.
+
+Features/Improvements:
+- Post editing
+- Show post edit history
+- Improve rate limit exceeded error message
+- Shorten hashtag save/follow action subtitles so they fit in the context menu
+- Remove Hide/Show Reblogs action for accounts the user isn't following
+
+Bugfixes:
+- Fix nodeinfo not being fetched on instances with punycode domains
+- Fix potential crash with interactive push gesture
+- Fix list timelines opened in new window lacking Edit button
+- Fix hashtag timelines opened in new window lacking save/follow actions
+- Fix being able to scroll to top while fast account switcher is active
+- Fix decoding statuses lacking emojis on Calckey
+- Fix decoding polls on Calckey
+
+## 2023.5 (84)
+Bugfixes:
+- Fix notifications scrolling to top when refreshing
+- Fix decoding statuses failing on GoToSocial
+- Fix assorted issues when collapsing/expanding between sidebar and tab bar modes
+
+## 2023.5 (83)
+This build contains significant refactors to the notifications screen, please report any issues you encounter.
+
+Features/Improvements:
+- Tweak appearance of profile fields
+- Make language picker sheet half-height
+
+Bugfixes:
+- Fix crash when laying out profile fields on certain accounts
+- Fix other presented screens getting dismissed when opened after closing expanded attachment view
+- Fix janky status collapse/expand animation on notifications screen
+- Fix link previews not appearing in notifications
+
+## 2023.5 (81)
+Further improvements and fixes to the Compose screen, see below. Features are frozen for the upcoming release, please report any bugs you encounter!
+
+Features/Improvements:
+- Add expanded attachment view on Compose screen
+    - Add an attachment, select the description text field, and tap on the expand button on the attachment thumbnail
+    - Expanded attachment view allows you to view the attachment larger while writing the description
+    - Plays back videos while writing the description
+    - iOS 16: Allow zooming in to expanded attachment view
+- Add language picker to Compose screen
+- Persist sidebar visibility across app launches
+- Align link verification checkmarks to link rather than creen edge
+- Fully dismiss, rather than ducking, the Compose screen when swiped down with no content
+- Remove Automatically Save Drafts preference
+    - Drafts are always saved automatically, and the save/delete sheet is now always shown on dismiss
+
+Bugfixes:
+- Fix share sheet extension being unavailable on iOS 15
+- Fix crash when loading draft with poll from share sheet extension
+- Fix active draft being deleted when Compose screen ducked
+- Fix restored, ducked Compose screen lacking title
+- Fix error when reloading empty profile
+- Fix local attachments not being deleted upon draft deletion
+- Fix GIFs being converted to still images on upload
+- Fix crash on deleting draft with attachments in share extension
+- Fix deleted attachments in Compose screen reappearing
+- Fix spinner on Send Report button being misplaced
+- Fix crash on launch loop when migrating from previous version in certain circumstances
+
+## 2023.5 (80)
+This build adds a Share Sheet extension and introduces further Compose screen refactors.
+
+Features/Improvements:
+- Add Share Sheet extension
+- Show reblogger's avatar on reblogged posts
+
+Bugfixes:
+- Fix not being able to close Compose screen when Automatically Save Drafts preference is off
+- Fix Post button always being disabled when Require Attachment Descriptions preference is on
+- Fix crash when pasting screenshots
+- Fix not being able to paste gifs
+- Don't consider HTTP 206 responses to timeline requests to be errors
+- Fix crash when displaying menu for statuses missing URLs
+- Fix errors while posting not displaying useful error messages
+
+## 2023.5 (77)
+The Compose screen has been substantially refactored in this build, in preparation for upcoming features, so please report any issues you encounter!
+
+Features/Improvements:
+- Use system photo picker instead of custom interface
+- Improve Customize Timelines hashtag search UI
+
+Bugfixes:
+- Fix scroll-to-top not working in in-app Safari
+- Fix crash when decoding pinned timelines fails
+- Fix inaccurate titles in certain error popups
+- Fix crash when comments present in status HTML
+- Fix replied-to account not being the first mention
+- Fix Compose window not having title set initially
+- Fix crash when the API returns notifications that are missing statuses
+- Fix "No Content" cell on profiles not using non-pure-black background
+- Fix reblogged statuses appearing in the Bookmarks list
+- Fix keyboard focus highlight not showing
+- macOS: Fix sidebar item keyboard shortcuts not working
+
+## 2023.4 (76)
+App Store release
+
 ## 2023.4 (75)
 This build contains tweaks to automatic error reporting for the timeline marker API. The previous build's changelog is included below.
 

Packages/ComposeUI/.gitignore

@@ -0,0 +1,9 @@
+.DS_Store
+/.build
+/Packages
+/*.xcodeproj
+xcuserdata/
+DerivedData/
+.swiftpm/config/registries.json
+.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
+.netrc

Packages/ComposeUI/.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:">
+   </FileRef>
+</Workspace>

Packages/ComposeUI/Package.resolved

@@ -0,0 +1,23 @@
+{
+  "pins" : [
+    {
+      "identity" : "swift-system",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-system.git",
+      "state" : {
+        "revision" : "025bcb1165deab2e20d4eaba79967ce73013f496",
+        "version" : "1.2.1"
+      }
+    },
+    {
+      "identity" : "swift-url",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/karwa/swift-url.git",
+      "state" : {
+        "branch" : "main",
+        "revision" : "6f45f3cd6606f39c3753b302fe30aea980067b30"
+      }
+    }
+  ],
+  "version" : 2
+}

Packages/ComposeUI/Package.swift

@@ -0,0 +1,34 @@
+// swift-tools-version: 5.7
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "ComposeUI",
+    platforms: [
+        .iOS(.v15),
+    ],
+    products: [
+        // Products define the executables and libraries a package produces, and make them visible to other packages.
+        .library(
+            name: "ComposeUI",
+            targets: ["ComposeUI"]),
+    ],
+    dependencies: [
+        // Dependencies declare other packages that this package depends on.
+        .package(path: "../Pachyderm"),
+        .package(path: "../InstanceFeatures"),
+        .package(path: "../TuskerComponents"),
+        .package(path: "../MatchedGeometryPresentation"),
+    ],
+    targets: [
+        // Targets are the basic building blocks of a package. A target can define a module or a test suite.
+        // Targets can depend on other targets in this package, and on products in packages this package depends on.
+        .target(
+            name: "ComposeUI",
+            dependencies: ["Pachyderm", "InstanceFeatures", "TuskerComponents", "MatchedGeometryPresentation"]),
+        .testTarget(
+            name: "ComposeUITests",
+            dependencies: ["ComposeUI"]),
+    ]
+)

Packages/ComposeUI/README.md

@@ -0,0 +1,3 @@
+# ComposeUI
+
+A description of this package.

Packages/ComposeUI/Sources/ComposeUI/API/PostService.swift

@@ -0,0 +1,186 @@
+//
+//  PostService.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 4/27/22.
+//  Copyright © 2022 Shadowfacts. All rights reserved.
+//
+
+import Foundation
+import Pachyderm
+import UniformTypeIdentifiers
+
+@MainActor
+class PostService: ObservableObject {
+    private let mastodonController: ComposeMastodonContext
+    private let config: ComposeUIConfig
+    private let draft: Draft
+    
+    @Published var currentStep = 1
+    @Published private(set) var totalSteps = 2
+    
+    init(mastodonController: ComposeMastodonContext, config: ComposeUIConfig, draft: Draft) {
+        self.mastodonController = mastodonController
+        self.config = config
+        self.draft = draft
+    }
+    
+    func post() async throws {
+        guard draft.hasContent || draft.editedStatusID != nil else {
+            return
+        }
+        
+        // save before posting, so if a crash occurs during network request, the status won't be lost
+        DraftsPersistentContainer.shared.save()
+        
+        let uploadedAttachments = try await uploadAttachments()
+        
+        let contentWarning = draft.contentWarningEnabled ? draft.contentWarning : ""
+        let sensitive = !contentWarning.isEmpty
+        
+        let request: Request<Status>
+        
+        if let editedStatusID = draft.editedStatusID {
+            if mastodonController.instanceFeatures.needsEditAttachmentsInSeparateRequest {
+                await updateEditedAttachments()
+            }
+            
+            request = Client.editStatus(
+                id: editedStatusID,
+                text: textForPosting(),
+                contentType: config.contentType,
+                spoilerText: contentWarning,
+                sensitive: sensitive,
+                language: mastodonController.instanceFeatures.createStatusWithLanguage ? draft.language : nil,
+                mediaIDs: uploadedAttachments,
+                mediaAttributes: draft.draftAttachments.compactMap {
+                    if let id = $0.editedAttachmentID {
+                        return EditStatusMediaAttributes(id: id, description: $0.attachmentDescription, focus: nil)
+                    } else {
+                        return nil
+                    }
+                },
+                poll: draft.poll.map {
+                    EditPollParameters(options: $0.pollOptions.map(\.text), expiresIn: Int($0.duration), multiple: $0.multiple)
+                }
+            )
+        } else {
+            request = Client.createStatus(
+                text: textForPosting(),
+                contentType: config.contentType,
+                inReplyTo: draft.inReplyToID,
+                mediaIDs: uploadedAttachments,
+                sensitive: sensitive,
+                spoilerText: contentWarning,
+                visibility: draft.visibility,
+                language: mastodonController.instanceFeatures.createStatusWithLanguage ? draft.language : nil,
+                pollOptions: draft.poll?.pollOptions.map(\.text),
+                pollExpiresIn: draft.poll == nil ? nil : Int(draft.poll!.duration),
+                pollMultiple: draft.poll?.multiple,
+                localOnly: mastodonController.instanceFeatures.localOnlyPosts ? draft.localOnly : nil
+            )
+        }
+        
+        do {
+            let (status, _) = try await mastodonController.run(request)
+            currentStep += 1
+            mastodonController.storeCreatedStatus(status)
+        } catch let error as Client.Error {
+            throw Error.posting(error)
+        }
+    }
+    
+    private func uploadAttachments() async throws -> [String] {
+        // 2 steps (request data, then upload) for each attachment
+        self.totalSteps += 2 * draft.attachments.count
+        
+        var attachments: [String] = []
+        attachments.reserveCapacity(draft.attachments.count)
+        for (index, attachment) in draft.draftAttachments.enumerated() {
+            // if this attachment already exists and is being edited, we don't do anything
+            // edits to the description are handled as part of the edit status request
+            if let editedAttachmentID = attachment.editedAttachmentID {
+                attachments.append(editedAttachmentID)
+                currentStep += 2
+                continue
+            }
+            
+            let data: Data
+            let utType: UTType
+            do {
+                (data, utType) = try await getData(for: attachment)
+                currentStep += 1
+            } catch let error as AttachmentData.Error {
+                throw Error.attachmentData(index: index, cause: error)
+            }
+            do {
+                let uploaded = try await uploadAttachment(data: data, utType: utType, description: attachment.attachmentDescription)
+                attachments.append(uploaded.id)
+                currentStep += 1
+            } catch let error as Client.Error {
+                throw Error.attachmentUpload(index: index, cause: error)
+            }
+        }
+        return attachments
+    }
+    
+    private func getData(for attachment: DraftAttachment) async throws -> (Data, UTType) {
+        return try await withCheckedThrowingContinuation { continuation in
+            attachment.getData(features: mastodonController.instanceFeatures) { result in
+                switch result {
+                case let .success(res):
+                    continuation.resume(returning: res)
+                case let .failure(error):
+                    continuation.resume(throwing: error)
+                }
+            }
+        }
+    }
+    
+    private func uploadAttachment(data: Data, utType: UTType, description: String?) async throws -> Attachment {
+        let formAttachment = FormAttachment(mimeType: utType.preferredMIMEType!, data: data, fileName: "file.\(utType.preferredFilenameExtension!)")
+        let req = Client.upload(attachment: formAttachment, description: description)
+        return try await mastodonController.run(req).0
+    }
+    
+    private func textForPosting() -> String {
+        var text = draft.text
+        // when using dictation, iOS sometimes leaves a U+FFFC OBJECT REPLACEMENT CHARACTER behind in the text,
+        // which we want to strip out before actually posting the status
+        text = text.replacingOccurrences(of: "\u{fffc}", with: "")
+        
+        if draft.localOnly && mastodonController.instanceFeatures.needsLocalOnlyEmojiHack {
+            text += " 👁"
+        }
+        
+        return text
+    }
+    
+    // only needed for akkoma, not used on regular mastodon
+    private func updateEditedAttachments() async {
+        for attachment in draft.draftAttachments {
+            guard let id = attachment.editedAttachmentID else {
+                continue
+            }
+            let req = Client.updateAttachment(id: id, description: attachment.attachmentDescription, focus: nil)
+            _ = try? await mastodonController.run(req)
+        }
+    }
+    
+    enum Error: Swift.Error, LocalizedError {
+        case attachmentData(index: Int, cause: AttachmentData.Error)
+        case attachmentUpload(index: Int, cause: Client.Error)
+        case posting(Client.Error)
+        
+        var localizedDescription: String {
+            switch self {
+            case let .attachmentData(index: index, cause: cause):
+                return "Attachment \(index + 1): \(cause.localizedDescription)"
+            case let .attachmentUpload(index: index, cause: cause):
+                return "Attachment \(index + 1): \(cause.localizedDescription)"
+            case let .posting(error):
+                return error.localizedDescription
+            }
+        }
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/CharacterCounter.swift

@@ -1,24 +1,25 @@
 //
 //  CharacterCounter.swift
-//  Pachyderm
+//  ComposeUI
 //
 //  Created by Shadowfacts on 9/29/18.
 //  Copyright © 2018 Shadowfacts. All rights reserved.
 //
 
 import Foundation
+import InstanceFeatures
 
 public struct CharacterCounter {
     
-    static let linkDetector = try! NSDataDetector(types: NSTextCheckingResult.CheckingType.link.rawValue)
-    static let mention = try! NSRegularExpression(pattern: "(@[a-z0-9_]+)(?:@[a-z0-9\\-\\.]+[a-z0-9]+)?", options: .caseInsensitive)
+    private static let linkDetector = try! NSDataDetector(types: NSTextCheckingResult.CheckingType.link.rawValue)
+    private static let mention = try! NSRegularExpression(pattern: "(@[a-z0-9_]+)(?:@[a-z0-9\\-\\.]+[a-z0-9]+)?", options: .caseInsensitive)
     
-    public static func count(text: String, for instance: Instance? = nil) -> Int {
+    public static func count(text: String, for instanceFeatures: InstanceFeatures) -> Int {
         let mentionsRemoved = removeMentions(in: text)
         var count = mentionsRemoved.count
         for match in linkDetector.matches(in: mentionsRemoved, options: [], range: NSRange(location: 0, length: mentionsRemoved.utf16.count)) {
             count -= match.range.length
-            count += instance?.configuration?.statuses.charactersReservedPerURL ?? 23 // default Mastodon link length
+            count += instanceFeatures.charsReservedPerURL
         }
         return count
     }

Packages/ComposeUI/Sources/ComposeUI/ComposeInput.swift

@@ -0,0 +1,29 @@
+//
+//  ComposeInput.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/5/23.
+//
+
+import Foundation
+import Combine
+import UIKit
+
+protocol ComposeInput: AnyObject, ObservableObject {
+    var toolbarElements: [ToolbarElement] { get }
+    var textInputMode: UITextInputMode? { get }
+    
+    var autocompleteState: AutocompleteState? { get }
+    var autocompleteStatePublisher: Published<AutocompleteState?>.Publisher { get }
+    
+    func autocomplete(with string: String)
+    
+    func applyFormat(_ format: StatusFormat)
+    
+    func beginAutocompletingEmoji()
+}
+
+enum ToolbarElement {
+    case emojiPicker
+    case formattingButtons
+}

Packages/ComposeUI/Sources/ComposeUI/ComposeMastodonContext.swift

@@ -0,0 +1,28 @@
+//
+//  ComposeMastodonContext.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/5/23.
+//
+
+import Foundation
+import Pachyderm
+import InstanceFeatures
+import UserAccounts
+
+public protocol ComposeMastodonContext {
+    var accountInfo: UserAccountInfo? { get }
+    var instanceFeatures: InstanceFeatures { get }
+    
+    func run<Result: Sendable>(_ request: Request<Result>) async throws -> (Result, Pagination?)
+    func getCustomEmojis(completion: @escaping ([Emoji]) -> Void)
+    
+    @MainActor
+    func searchCachedAccounts(query: String) -> [AccountProtocol]
+    @MainActor
+    func cachedRelationship(for accountID: String) -> RelationshipProtocol?
+    @MainActor
+    func searchCachedHashtags(query: String) -> [Hashtag]
+    
+    func storeCreatedStatus(_ status: Status)
+}

Packages/ComposeUI/Sources/ComposeUI/ComposeUIConfig.swift

@@ -0,0 +1,42 @@
+//
+//  ComposeUIConfig.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/4/23.
+//
+
+import SwiftUI
+import Pachyderm
+import PhotosUI
+import PencilKit
+import TuskerComponents
+
+public struct ComposeUIConfig {
+    // Config
+    public var allowSwitchingDrafts = true
+    public var textSelectionStartsAtBeginning = false
+    
+    // Style
+    public var backgroundColor = Color(uiColor: .systemBackground)
+    public var groupedBackgroundColor = Color(uiColor: .systemGroupedBackground)
+    public var groupedCellBackgroundColor = Color(uiColor: .systemBackground)
+    public var fillColor = Color(uiColor: .systemFill)
+    public var avatarStyle = AvatarImageView.Style.roundRect
+    
+    // Preferences
+    public var useTwitterKeyboard = false
+    public var contentType = StatusContentType.plain
+    public var requireAttachmentDescriptions = false
+    
+    // Host callbacks
+    public var dismiss: @MainActor (DismissMode) -> Void = { _ in }
+    public var presentAssetPicker: ((@MainActor @escaping ([PHPickerResult]) -> Void) -> Void)?
+    public var presentDrawing: ((PKDrawing, @escaping (PKDrawing) -> Void) -> Void)?
+    public var userActivityForDraft: ((Draft) -> NSItemProvider?) = { _ in nil }
+    
+    public init() {
+    }
+}
+
+extension ComposeUIConfig {
+}

Packages/ComposeUI/Sources/ComposeUI/Controllers/AttachmentRowController.swift

@@ -0,0 +1,217 @@
+//
+//  AttachmentRowController.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/12/23.
+//
+
+import SwiftUI
+import TuskerComponents
+import Vision
+import MatchedGeometryPresentation
+
+class AttachmentRowController: ViewController {
+    let parent: ComposeController
+    let attachment: DraftAttachment
+    
+    @Published var descriptionMode: DescriptionMode = .allowEntry
+    @Published var textRecognitionError: Error?
+    @Published var focusAttachmentOnTextEditorUnfocus = false
+    
+    let thumbnailController: AttachmentThumbnailController
+    
+    private var descriptionObservation: NSKeyValueObservation?
+    
+    init(parent: ComposeController, attachment: DraftAttachment) {
+        self.parent = parent
+        self.attachment = attachment
+        self.thumbnailController = AttachmentThumbnailController(attachment: attachment, parent: parent)
+        
+        descriptionObservation = attachment.observe(\.attachmentDescription, changeHandler: { [unowned self] _, _ in
+            // the faultingState is non-zero for objects that are being cascade deleted when the draft is deleted
+            if attachment.faultingState == 0 {
+                self.updateAttachmentDescriptionState()
+            }
+        })
+    }
+    
+    private func updateAttachmentDescriptionState() {
+        if attachment.attachmentDescription.isEmpty {
+            parent.attachmentsMissingDescriptions.insert(attachment.id)
+        } else {
+            parent.attachmentsMissingDescriptions.remove(attachment.id)
+        }
+    }
+    
+    var view: some View {
+        AttachmentView(attachment: attachment)
+    }
+    
+    private func removeAttachment() {
+        withAnimation {
+            parent.draft.attachments.remove(attachment)
+        }
+    }
+    
+    private func editDrawing() {
+        guard case .drawing(let drawing) = attachment.data else {
+            return
+        }
+        parent.config.presentDrawing?(drawing) { newDrawing in
+            self.attachment.drawing = newDrawing
+        }
+    }
+    
+    private func focusAttachment() {
+        focusAttachmentOnTextEditorUnfocus = false
+        parent.focusedAttachment = (attachment, thumbnailController)
+    }
+    
+    private func recognizeText() {
+        descriptionMode = .recognizingText
+        
+        DispatchQueue.global(qos: .userInitiated).async {
+            self.attachment.getData(features: self.parent.mastodonController.instanceFeatures, skipAllConversion: true) { result in
+                let data: Data
+                switch result {
+                case .success((let d, _)):
+                    data = d
+                case .failure(let error):
+                    self.descriptionMode = .allowEntry
+                    self.textRecognitionError = error
+                    return
+                }
+                
+                let handler = VNImageRequestHandler(data: data)
+                let request = VNRecognizeTextRequest { request, error in
+                    DispatchQueue.main.async {
+                        if let results = request.results as? [VNRecognizedTextObservation] {
+                            var text = ""
+                            for observation in results {
+                                let result = observation.topCandidates(1).first!
+                                text.append(result.string)
+                                text.append("\n")
+                            }
+                            self.attachment.attachmentDescription = text
+                        }
+                        self.descriptionMode = .allowEntry
+                    }
+                }
+                request.recognitionLevel = .accurate
+                request.usesLanguageCorrection = true
+                DispatchQueue.global(qos: .userInitiated).async {
+                    do {
+                        try handler.perform([request])
+                    } catch let error as NSError where error.code == 1 {
+                        // The perform call throws an error with code 1 if the request is cancelled, which we don't want to show an alert for.
+                        return
+                    } catch {
+                        DispatchQueue.main.async {
+                            self.descriptionMode = .allowEntry
+                            self.textRecognitionError = error
+                        }
+                    }
+                }
+            }
+        }
+    }
+    
+    struct AttachmentView: View {
+        @ObservedObject private var attachment: DraftAttachment
+        @EnvironmentObject private var controller: AttachmentRowController
+        @FocusState private var textEditorFocused: Bool
+        
+        init(attachment: DraftAttachment) {
+            self.attachment = attachment
+        }
+        
+        var body: some View {
+            HStack(alignment: .center, spacing: 4) {
+                ControllerView(controller: { controller.thumbnailController })
+                    .clipShape(RoundedRectangle(cornerRadius: 8))
+                    .environment(\.attachmentThumbnailConfiguration, .init(contentMode: .fit, fullSize: false))
+                    .matchedGeometrySource(id: attachment.id, presentationID: attachment.id)
+                    .overlay {
+                        thumbnailFocusedOverlay
+                    }
+                    .frame(width: 80, height: 80)
+                    .onTapGesture {
+                        textEditorFocused = false
+                        // if we just focus the attachment immediately, the text editor doesn't actually unfocus
+                        controller.focusAttachmentOnTextEditorUnfocus = true
+                    }
+                    .contextMenu {
+                        if attachment.drawingData != nil {
+                            Button(action: controller.editDrawing) {
+                                Label("Edit Drawing", systemImage: "hand.draw")
+                            }
+                        } else if attachment.type == .image {
+                            Button(action: controller.recognizeText) {
+                                Label("Recognize Text", systemImage: "doc.text.viewfinder")
+                            }
+                        }
+
+                        Button(role: .destructive, action: controller.removeAttachment) {
+                            Label("Delete", systemImage: "trash")
+                        }
+                    } previewIfAvailable: {
+                        ControllerView(controller: { controller.thumbnailController })
+                    }
+                
+                switch controller.descriptionMode {
+                case .allowEntry:
+                    InlineAttachmentDescriptionView(attachment: attachment, minHeight: 80)
+                        .matchedGeometrySource(id: AttachmentDescriptionTextViewID(attachment), presentationID: attachment.id)
+                        .focused($textEditorFocused)
+                    
+                case .recognizingText:
+                    ProgressView()
+                        .progressViewStyle(.circular)
+                }
+            }
+            .alertWithData("Text Recognition Failed", data: $controller.textRecognitionError) { _ in
+                Button("OK") {}
+            } message: { error in
+                Text(error.localizedDescription)
+            }
+            .onAppear(perform: controller.updateAttachmentDescriptionState)
+            .onChange(of: textEditorFocused) { newValue in
+                if !newValue && controller.focusAttachmentOnTextEditorUnfocus {
+                    controller.focusAttachment()
+                }
+            }
+        }
+        
+        @ViewBuilder
+        private var thumbnailFocusedOverlay: some View {
+            Image(systemName: "arrow.up.backward.and.arrow.down.forward")
+                .foregroundColor(.white)
+                .frame(maxWidth: .infinity, maxHeight: .infinity)
+                .background(Color.black.opacity(0.35))
+                .clipShape(RoundedRectangle(cornerRadius: 8))
+                // use .opacity and an animation, because .transition doesn't seem to play nice with @FocusState
+                .opacity(textEditorFocused ? 1 : 0)
+                .animation(.linear(duration: 0.1), value: textEditorFocused)
+        }
+
+    }
+    
+}
+
+extension AttachmentRowController {
+    enum DescriptionMode {
+        case allowEntry, recognizingText
+    }
+}
+
+private extension View {
+    @available(iOS, obsoleted: 16.0)
+    @ViewBuilder
+    func contextMenu<M: View, P: View>(@ViewBuilder menuItems: () -> M, @ViewBuilder previewIfAvailable preview: () -> P) -> some View {
+        if #available(iOS 16.0, *) {
+            self.contextMenu(menuItems: menuItems, preview: preview)
+        } else {
+            self.contextMenu(menuItems: menuItems)
+        }
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/Controllers/AttachmentThumbnailController.swift

@@ -0,0 +1,191 @@
+//
+//  AttachmentThumbnailController.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 11/10/21.
+//  Copyright © 2021 Shadowfacts. All rights reserved.
+//
+
+import SwiftUI
+import Photos
+import TuskerComponents
+
+class AttachmentThumbnailController: ViewController {
+    unowned let parent: ComposeController
+    let attachment: DraftAttachment
+    
+    @Published private var image: UIImage?
+    @Published private var gifController: GIFController?
+    @Published private var fullSize: Bool = false
+    
+    init(attachment: DraftAttachment, parent: ComposeController) {
+        self.attachment = attachment
+        self.parent = parent
+    }
+    
+    func loadImageIfNecessary(fullSize: Bool) {
+        if (gifController != nil) || (image != nil && self.fullSize) {
+            return
+        }
+        self.fullSize = fullSize
+        
+        switch attachment.data {
+        case .editing(_, let kind, let url):
+            switch kind {
+            case .image:
+                Task { @MainActor in
+                    self.image = await parent.fetchAttachment(url)
+                }
+                
+            case .video, .gifv:
+                let asset = AVURLAsset(url: url)
+                let imageGenerator = AVAssetImageGenerator(asset: asset)
+                if let cgImage = try? imageGenerator.copyCGImage(at: .zero, actualTime: nil) {
+                    self.image = UIImage(cgImage: cgImage)
+                }
+
+            case .audio, .unknown:
+                break
+            }
+            
+        case .asset(let id):
+            guard let asset = PHAsset.fetchAssets(withLocalIdentifiers: [id], options: nil).firstObject else {
+                return
+            }
+            let isGIF = PHAssetResource.assetResources(for: asset).contains(where: { $0.uniformTypeIdentifier == UTType.gif.identifier })
+            if isGIF {
+                PHImageManager.default().requestImageDataAndOrientation(for: asset, options: nil) { data, typeIdentifier, orientation, info in
+                    guard let data else { return }
+                    if typeIdentifier == UTType.gif.identifier {
+                        self.gifController = GIFController(gifData: data)
+                    } else {
+                        let image = UIImage(data: data)
+                        DispatchQueue.main.async {
+                            self.image = image
+                        }
+                    }
+                }
+            } else {
+                let size: CGSize
+                if fullSize {
+                    size = PHImageManagerMaximumSize
+                } else {
+                    // currently only used as thumbnail in ComposeAttachmentRow
+                    size = CGSize(width: 80, height: 80)
+                }
+                PHImageManager.default().requestImage(for: asset, targetSize: size, contentMode: .aspectFill, options: nil) { (image, _) in
+                    DispatchQueue.main.async {
+                        self.image = image
+                    }
+                }
+            }
+            
+        case .drawing(let drawing):
+            image = drawing.imageInLightMode(from: drawing.bounds)
+
+        case .file(let url, let type):
+            if type.conforms(to: .movie) {
+                let asset = AVURLAsset(url: url)
+                let imageGenerator = AVAssetImageGenerator(asset: asset)
+                if let cgImage = try? imageGenerator.copyCGImage(at: .zero, actualTime: nil) {
+                    self.image = UIImage(cgImage: cgImage)
+                }
+            } else if let data = try? Data(contentsOf: url) {
+                if type == .gif {
+                    self.gifController = GIFController(gifData: data)
+                } else if type.conforms(to: .image),
+                   let image = UIImage(data: data) {
+                    // using prepareThumbnail on images from PHPicker results in extremely high memory usage,
+                    // crashing share extension. see FB12186346
+//                    if fullSize {
+                        image.prepareForDisplay { prepared in
+                            DispatchQueue.main.async {
+                                self.image = image
+                            }
+                        }
+//                    } else {
+//                        image.prepareThumbnail(of: CGSize(width: 80, height: 80)) { prepared in
+//                            DispatchQueue.main.async {
+//                                self.image = prepared
+//                            }
+//                        }
+//                    }
+                }
+            }
+            
+        case .none:
+            break
+        }
+    }
+    
+    var view: some SwiftUI.View {
+        View()
+    }
+    
+    struct View: SwiftUI.View {
+        @EnvironmentObject private var controller: AttachmentThumbnailController
+        @Environment(\.attachmentThumbnailConfiguration) private var config
+        
+        var body: some SwiftUI.View {
+            content
+                .onAppear {
+                    controller.loadImageIfNecessary(fullSize: config.fullSize)
+                }
+        }
+        
+        @ViewBuilder
+        private var content: some SwiftUI.View {
+            if let gifController = controller.gifController {
+                GIFViewWrapper(controller: gifController)
+            } else if let image = controller.image {
+                Image(uiImage: image)
+                    .resizable()
+                    .aspectRatio(config.aspectRatio, contentMode: config.contentMode)
+            } else {
+                Image(systemName: "photo")
+            }
+        }
+    }
+}
+
+struct AttachmentThumbnailConfiguration {
+    let aspectRatio: CGFloat?
+    let contentMode: ContentMode
+    let fullSize: Bool
+    
+    init(aspectRatio: CGFloat? = nil, contentMode: ContentMode = .fit, fullSize: Bool = false) {
+        self.aspectRatio = aspectRatio
+        self.contentMode = contentMode
+        self.fullSize = fullSize
+    }
+}
+
+private struct AttachmentThumbnailConfigurationEnvironmentKey: EnvironmentKey {
+    static let defaultValue = AttachmentThumbnailConfiguration()
+}
+
+extension EnvironmentValues {
+    var attachmentThumbnailConfiguration: AttachmentThumbnailConfiguration {
+        get { self[AttachmentThumbnailConfigurationEnvironmentKey.self] }
+        set { self[AttachmentThumbnailConfigurationEnvironmentKey.self] = newValue }
+    }
+}
+
+private struct GIFViewWrapper: UIViewRepresentable {
+    typealias UIViewType = GIFImageView
+
+    @State var controller: GIFController
+
+    func makeUIView(context: Context) -> GIFImageView {
+        let view = GIFImageView()
+        controller.attach(to: view)
+        controller.startAnimating()
+        view.contentMode = .scaleAspectFit
+        view.setContentCompressionResistancePriority(.defaultLow, for: .horizontal)
+        view.setContentCompressionResistancePriority(.defaultLow, for: .vertical)
+        return view
+    }
+
+    func updateUIView(_ uiView: GIFImageView, context: Context) {
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/Controllers/AttachmentsListController.swift

@@ -0,0 +1,248 @@
+//
+//  AttachmentsListController.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/8/23.
+//
+
+import SwiftUI
+import PhotosUI
+import PencilKit
+
+class AttachmentsListController: ViewController {
+    
+    unowned let parent: ComposeController
+    var draft: Draft { parent.draft }
+    
+    var isValid: Bool {
+        !requiresAttachmentDescriptions && validAttachmentCombination
+    }
+
+    private var requiresAttachmentDescriptions: Bool {
+        if parent.config.requireAttachmentDescriptions {
+            if draft.attachments.count == 0 {
+                return false
+            } else {
+                return !parent.attachmentsMissingDescriptions.isEmpty
+            }
+        } else {
+            return false
+        }
+    }
+    
+    var validAttachmentCombination: Bool {
+        if !parent.mastodonController.instanceFeatures.mastodonAttachmentRestrictions {
+            return true
+        } else if draft.attachments.count > 1,
+                  draft.draftAttachments.contains(where: { $0.type == .video }) {
+            return false
+        } else if draft.attachments.count > 4 {
+            return false
+        }
+        return true
+    }
+    
+    init(parent: ComposeController) {
+        self.parent = parent
+    }
+    
+    var canAddAttachment: Bool {
+        if parent.mastodonController.instanceFeatures.mastodonAttachmentRestrictions {
+            return draft.attachments.count < 4 && draft.draftAttachments.allSatisfy { $0.type == .image } && draft.poll == nil
+        } else {
+            return true
+        }
+    }
+    
+    private var canAddPoll: Bool {
+        if parent.mastodonController.instanceFeatures.pollsAndAttachments {
+            return true
+        } else {
+            return draft.attachments.count == 0
+        }
+    }
+    
+    var view: some View {
+        AttachmentsList()
+    }
+    
+    private func moveAttachments(from source: IndexSet, to destination: Int) {
+        // just using moveObjects(at:to:) on the draft.attachments NSMutableOrderedSet
+        // results in the order switching back to the previous order and then to the correct one
+        // on the subsequent 2 view updates. creating a new set with the proper order doesn't have that problem
+        var array = draft.draftAttachments
+        array.move(fromOffsets: source, toOffset: destination)
+        draft.attachments = NSMutableOrderedSet(array: array)
+    }
+    
+    private func deleteAttachments(at indices: IndexSet) {
+        var array = draft.draftAttachments
+        array.remove(atOffsets: indices)
+        draft.attachments = NSMutableOrderedSet(array: array)
+    }
+    
+    private func insertAttachments(at offset: Int, itemProviders: [NSItemProvider]) {
+        for provider in itemProviders where provider.canLoadObject(ofClass: DraftAttachment.self) {
+            provider.loadObject(ofClass: DraftAttachment.self) { object, error in
+                guard let attachment = object as? DraftAttachment else { return }
+                DispatchQueue.main.async {
+                    guard self.canAddAttachment else { return }
+                    DraftsPersistentContainer.shared.viewContext.insert(attachment)
+                    attachment.draft = self.draft
+                    self.draft.attachments.add(attachment)
+                }
+            }
+        }
+    }
+    
+    private func addImage() {
+        parent.deleteDraftOnDisappear = false
+        parent.config.presentAssetPicker?({ results in
+            self.insertAttachments(at: self.draft.attachments.count, itemProviders: results.map(\.itemProvider))
+        })
+    }
+    
+    private func addDrawing() {
+        parent.deleteDraftOnDisappear = false
+        parent.config.presentDrawing?(PKDrawing()) { drawing in
+            let attachment = DraftAttachment(context: DraftsPersistentContainer.shared.viewContext)
+            attachment.id = UUID()
+            attachment.drawing = drawing
+            attachment.draft = self.draft
+            self.draft.attachments.add(attachment)
+        }
+    }
+    
+    private func togglePoll() {
+        UIApplication.shared.sendAction(#selector(UIView.resignFirstResponder), to: nil, from: nil, for: nil)
+        
+        withAnimation {
+            draft.poll = draft.poll == nil ? Poll(context: DraftsPersistentContainer.shared.viewContext) : nil
+        }
+    }
+    
+    struct AttachmentsList: View {
+        private let cellHeight: CGFloat = 80
+        private let cellPadding: CGFloat = 12
+        
+        @EnvironmentObject private var controller: AttachmentsListController
+        @EnvironmentObject private var draft: Draft
+        @Environment(\.colorScheme) private var colorScheme
+        @Environment(\.horizontalSizeClass) private var horizontalSizeClass
+        
+        var body: some View {
+            Group {
+                attachmentsList
+                
+                if controller.parent.config.presentAssetPicker != nil {
+                    addImageButton
+                        .listRowInsets(EdgeInsets(top: cellPadding / 2, leading: cellPadding / 2, bottom: cellPadding / 2, trailing: cellPadding / 2))
+                }
+                
+                if controller.parent.config.presentDrawing != nil {
+                    addDrawingButton
+                        .listRowInsets(EdgeInsets(top: cellPadding / 2, leading: cellPadding / 2, bottom: cellPadding / 2, trailing: cellPadding / 2))
+                }
+                
+                togglePollButton
+                    .listRowInsets(EdgeInsets(top: cellPadding / 2, leading: cellPadding / 2, bottom: cellPadding / 2, trailing: cellPadding / 2))
+            }
+        }
+        
+        private var attachmentsList: some View {
+            ForEach(draft.attachments.array as! [DraftAttachment]) { attachment in
+                ControllerView(controller: { AttachmentRowController(parent: controller.parent, attachment: attachment) })
+                    .listRowInsets(EdgeInsets(top: cellPadding / 2, leading: cellPadding / 2, bottom: cellPadding / 2, trailing: cellPadding / 2))
+                    .id(attachment.id)
+            }
+            .onMove(perform: controller.moveAttachments)
+            .onDelete(perform: controller.deleteAttachments)
+            .conditionally(controller.canAddAttachment) {
+                $0.onInsert(of: DraftAttachment.readableTypeIdentifiersForItemProvider, perform: { offset, providers in
+                    controller.insertAttachments(at: offset, itemProviders: providers)
+                })
+            }
+            // only sort of works, see #240
+            .onDrop(of: DraftAttachment.readableTypeIdentifiersForItemProvider, isTargeted: nil) { providers in
+                controller.insertAttachments(at: 0, itemProviders: providers)
+                return true
+            }
+        }
+        
+        private var addImageButton: some View {
+            Button(action: controller.addImage) {
+                Label("Add photo or video", systemImage: colorScheme == .dark ? "photo.fill" : "photo")
+            }
+            .disabled(!controller.canAddAttachment)
+            .foregroundColor(.accentColor)
+            .frame(height: cellHeight / 2)
+        }
+        
+        private var addDrawingButton: some View {
+            Button(action: controller.addDrawing) {
+                Label("Draw something", systemImage: "hand.draw")
+            }
+            .disabled(!controller.canAddAttachment)
+            .foregroundColor(.accentColor)
+            .frame(height: cellHeight / 2)
+        }
+        
+        private var togglePollButton: some View {
+            Button(action: controller.togglePoll) {
+                Label(draft.poll == nil ? "Add a poll" : "Remove poll", systemImage: "chart.bar.doc.horizontal")
+            }
+            .disabled(!controller.canAddPoll)
+            .foregroundColor(.accentColor)
+            .frame(height: cellHeight / 2)
+        }
+    }
+}
+
+fileprivate extension View {
+    @ViewBuilder
+    func conditionally(_ condition: Bool, body: (Self) -> some View) -> some View {
+        if condition {
+            body(self)
+        } else {
+            self
+        }
+    }
+    
+    @available(iOS, obsoleted: 16.0)
+    @ViewBuilder
+    func sheetOrPopover(isPresented: Binding<Bool>, @ViewBuilder content: @escaping () -> some View) -> some View {
+        if #available(iOS 16.0, *) {
+            self.modifier(SheetOrPopover(isPresented: isPresented, view: content))
+        } else {
+            self.popover(isPresented: isPresented, content: content)
+        }
+    }
+    
+    @available(iOS, obsoleted: 16.0)
+    @ViewBuilder
+    func withSheetDetentsIfAvailable() -> some View {
+        if #available(iOS 16.0, *) {
+            self
+                .presentationDetents([.medium, .large])
+                .presentationDragIndicator(.visible)
+        } else {
+            self
+        }
+    }
+}
+
+@available(iOS 16.0, *)
+fileprivate struct SheetOrPopover<V: View>: ViewModifier {
+    @Binding var isPresented: Bool
+    @ViewBuilder let view: () -> V
+    
+    @Environment(\.horizontalSizeClass) var sizeClass
+    
+    func body(content: Content) -> some View {
+        if sizeClass == .compact {
+            content.sheet(isPresented: $isPresented, content: view)
+        } else {
+            content.popover(isPresented: $isPresented, content: view)
+        }
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/Controllers/AutocompleteController.swift

@@ -0,0 +1,83 @@
+//
+//  AutocompleteController.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/25/23.
+//
+
+import SwiftUI
+import Combine
+
+class AutocompleteController: ViewController {
+    
+    unowned let parent: ComposeController
+    
+    @Published var mode: Mode?
+    
+    init(parent: ComposeController) {
+        self.parent = parent
+        
+        parent.$currentInput
+            .compactMap { $0 }
+            .flatMap { $0.autocompleteStatePublisher }
+            .map {
+                switch $0 {
+                case .mention(_):
+                    return Mode.mention
+                case .emoji(_):
+                    return Mode.emoji
+                case .hashtag(_):
+                    return Mode.hashtag
+                case nil:
+                    return nil
+                }
+            }
+            .assign(to: &$mode)
+    }
+    
+    var view: some View {
+        AutocompleteView()
+    }
+    
+    struct AutocompleteView: View {
+        @EnvironmentObject private var parent: ComposeController
+        @EnvironmentObject private var controller: AutocompleteController
+        @Environment(\.colorScheme) private var colorScheme: ColorScheme
+        
+        var body: some View {
+            if let mode = controller.mode {
+                VStack(spacing: 0) {
+                    Divider()
+                    suggestionsView(mode: mode)
+                }
+                .background(backgroundColor)
+            }
+        }
+        
+        @ViewBuilder
+        private func suggestionsView(mode: Mode) -> some View {
+            switch mode {
+            case .mention:
+                ControllerView(controller: { AutocompleteMentionsController(composeController: parent) })
+            case .emoji:
+                ControllerView(controller: { AutocompleteEmojisController(composeController: parent) })
+            case .hashtag:
+                ControllerView(controller: { AutocompleteHashtagsController(composeController: parent) })
+            }
+        }
+        
+        private var backgroundColor: Color {
+            Color(white: colorScheme == .light ? 0.98 : 0.15)
+        }
+        
+        private var borderColor: Color {
+            Color(white: colorScheme == .light ? 0.85 : 0.25)
+        }
+    }
+    
+    enum Mode {
+        case mention
+        case emoji
+        case hashtag
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/Controllers/AutocompleteEmojisController.swift

@@ -0,0 +1,196 @@
+//
+//  AutocompleteEmojisController.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/26/23.
+//
+
+import SwiftUI
+import Pachyderm
+import Combine
+
+class AutocompleteEmojisController: ViewController {
+    unowned let composeController: ComposeController
+    var mastodonController: ComposeMastodonContext { composeController.mastodonController }
+    
+    private var stateCancellable: AnyCancellable?
+    private var searchTask: Task<Void, Never>?
+    
+    @Published var expanded = false
+    @Published var emojis: [Emoji] = []
+    
+    var emojisBySection: [String: [Emoji]] {
+        var values: [String: [Emoji]] = [:]
+        for emoji in emojis {
+            let key = emoji.category ?? ""
+            if !values.keys.contains(key) {
+                values[key] = [emoji]
+            } else {
+                values[key]!.append(emoji)
+            }
+        }
+        return values
+    }
+    
+    init(composeController: ComposeController) {
+        self.composeController = composeController
+        
+        stateCancellable = composeController.$currentInput
+            .compactMap { $0 }
+            .flatMap { $0.autocompleteStatePublisher }
+            .compactMap {
+                if case .emoji(let s) = $0 {
+                    return s
+                } else {
+                    return nil
+                }
+            }
+            .removeDuplicates()
+            .sink { [unowned self] query in
+                self.searchTask?.cancel()
+                self.searchTask = Task {
+                    await self.queryChanged(query)
+                }
+            }
+    }
+    
+    @MainActor
+    private func queryChanged(_ query: String) async {
+        var emojis = await withCheckedContinuation { continuation in
+            composeController.mastodonController.getCustomEmojis {
+                continuation.resume(returning: $0)
+            }
+        }
+        guard !Task.isCancelled else {
+            return
+        }
+        
+        if !query.isEmpty {
+            emojis =
+            emojis.map { emoji -> (Emoji, (matched: Bool, score: Int)) in
+                (emoji, FuzzyMatcher.match(pattern: query, str: emoji.shortcode))
+            }
+            .filter(\.1.matched)
+            .sorted { $0.1.score > $1.1.score }
+            .map(\.0)
+        }
+        
+        var shortcodes = Set<String>()
+        var newEmojis = [Emoji]()
+        for emoji in emojis where !shortcodes.contains(emoji.shortcode) {
+            newEmojis.append(emoji)
+            shortcodes.insert(emoji.shortcode)
+        }
+        self.emojis = newEmojis
+    }
+    
+    private func toggleExpanded() {
+        withAnimation {
+            expanded.toggle()
+        }
+    }
+    
+    private func autocomplete(with emoji: Emoji) {
+        guard let input = composeController.currentInput else { return }
+        input.autocomplete(with: ":\(emoji.shortcode):")
+    }
+    
+    var view: some View {
+        AutocompleteEmojisView()
+    }
+    
+    struct AutocompleteEmojisView: View {
+        @EnvironmentObject private var composeController: ComposeController
+        @EnvironmentObject private var controller: AutocompleteEmojisController
+        @ScaledMetric private var emojiSize = 30
+        
+        var body: some View {
+            // When exapnded, the toggle button should be at the top. When collapsed, it should be centered.
+            HStack(alignment: controller.expanded ? .top : .center, spacing: 0) {
+                emojiList
+                    .transition(.move(edge: .bottom))
+                
+                toggleExpandedButton
+                    .padding(.trailing, 8)
+                    .padding(.top, controller.expanded ? 8 : 0)
+            }
+        }
+        
+        @ViewBuilder
+        private var emojiList: some View {
+            if controller.expanded {
+                verticalGrid
+                    .frame(height: 150)
+            } else {
+                horizontalScrollView
+            }
+        }
+        
+        private var verticalGrid: some View {
+            ScrollView {
+                LazyVGrid(columns: [GridItem(.adaptive(minimum: emojiSize), spacing: 4)]) {
+                    ForEach(controller.emojisBySection.keys.sorted(), id: \.self) { section in
+                        Section {
+                            ForEach(controller.emojisBySection[section]!, id: \.shortcode) { emoji in
+                                Button(action: { controller.autocomplete(with: emoji) }) {
+                                    composeController.emojiImageView(emoji)
+                                        .frame(height: emojiSize)
+                                }
+                                .accessibilityLabel(emoji.shortcode)
+                            }
+                        } header: {
+                            if !section.isEmpty {
+                                VStack(alignment: .leading, spacing: 2) {
+                                    Text(section)
+                                        .font(.caption)
+                                    
+                                    Divider()
+                                }
+                                .padding(.top, 4)
+                            }
+                        }
+                    }
+                }
+                .padding(.all, 8)
+                // the spacing between the grid sections doesn't seem to be taken into account by the ScrollView?
+                .padding(.bottom, CGFloat(controller.emojisBySection.keys.count) * 4)
+            }
+            .frame(maxWidth: .infinity)
+        }
+        
+        private var horizontalScrollView: some View {
+            ScrollView(.horizontal) {
+                HStack(spacing: 8) {
+                    ForEach(controller.emojis, id: \.shortcode) { emoji in
+                        Button(action: { controller.autocomplete(with: emoji) }) {
+                            HStack(spacing: 4) {
+                                composeController.emojiImageView(emoji)
+                                    .frame(height: emojiSize)
+                                Text(verbatim: ":\(emoji.shortcode):")
+                                    .foregroundColor(.primary)
+                            }
+                        }
+                        .accessibilityLabel(emoji.shortcode)
+                        .frame(height: emojiSize)
+                    }
+                    .animation(.linear(duration: 0.2), value: controller.emojis)
+                    
+                    Spacer(minLength: emojiSize)
+                }
+                .padding(.horizontal, 8)
+                .frame(height: emojiSize + 16)
+            }
+        }
+        
+        private var toggleExpandedButton: some View {
+            Button(action: controller.toggleExpanded) {
+                Image(systemName: "chevron.down")
+                    .resizable()
+                    .aspectRatio(contentMode: .fit)
+                    .rotationEffect(controller.expanded ? .zero : .degrees(180))
+            }
+            .accessibilityLabel(controller.expanded ? "Collapse" : "Expand")
+            .frame(width: 20, height: 20)
+        }
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/Controllers/AutocompleteHashtagsController.swift

@@ -0,0 +1,124 @@
+//
+//  AutocompleteHashtagsController.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 4/1/23.
+//
+
+import SwiftUI
+import Combine
+import Pachyderm
+
+class AutocompleteHashtagsController: ViewController {
+    unowned let composeController: ComposeController
+    var mastodonController: ComposeMastodonContext { composeController.mastodonController }
+    
+    private var stateCancellable: AnyCancellable?
+    private var searchTask: Task<Void, Never>?
+    
+    @Published var hashtags: [Hashtag] = []
+    
+    init(composeController: ComposeController) {
+        self.composeController = composeController
+        
+        stateCancellable = composeController.$currentInput
+            .compactMap { $0 }
+            .flatMap { $0.autocompleteStatePublisher }
+            .compactMap {
+                if case .hashtag(let s) = $0 {
+                    return s
+                } else {
+                    return nil
+                }
+            }
+            .debounce(for: .milliseconds(250), scheduler: DispatchQueue.main)
+            .sink { [unowned self] query in
+                self.searchTask?.cancel()
+                self.searchTask = Task {
+                    await self.queryChanged(query)
+                }
+            }
+    }
+    
+    @MainActor
+    private func queryChanged(_ query: String) async {
+        guard !query.isEmpty else {
+            hashtags = []
+            return
+        }
+        
+        let localHashtags = mastodonController.searchCachedHashtags(query: query)
+        
+        var onlyLocalTagsTask: Task<Void, any Error>?
+        if !localHashtags.isEmpty {
+            onlyLocalTagsTask = Task {
+                // we only want to do the local-only search if the trends API call takes more than .25sec or it fails
+                try await Task.sleep(nanoseconds: 250 * NSEC_PER_MSEC)
+                self.updateHashtags(searchResults: [], trendingTags: [], localHashtags: localHashtags, query: query)
+            }
+        }
+        
+        async let trendingTags = try? mastodonController.run(Client.getTrendingHashtags()).0
+        async let searchResults = try? mastodonController.run(Client.search(query: "#\(query)", types: [.hashtags])).0.hashtags
+        
+        let trends = await trendingTags ?? []
+        let search = await searchResults ?? []
+        
+        onlyLocalTagsTask?.cancel()
+        guard !Task.isCancelled else { return }
+        
+        updateHashtags(searchResults: search, trendingTags: trends, localHashtags: localHashtags, query: query)
+    }
+    
+    @MainActor
+    private func updateHashtags(searchResults: [Hashtag], trendingTags: [Hashtag], localHashtags: [Hashtag], query: String) {
+        var addedHashtags = Set<String>()
+        var hashtags = [(Hashtag, Int)]()
+        for group in [searchResults, trendingTags, localHashtags] {
+            for tag in group where !addedHashtags.contains(tag.name) {
+                let (matched, score) = FuzzyMatcher.match(pattern: query, str: tag.name)
+                if matched {
+                    hashtags.append((tag, score))
+                    addedHashtags.insert(tag.name)
+                }
+            }
+        }
+        self.hashtags = hashtags
+            .sorted { $0.1 > $1.1 }
+            .map(\.0)
+    }
+    
+    private func autocomplete(with hashtag: Hashtag) {
+        guard let currentInput = composeController.currentInput else { return }
+        currentInput.autocomplete(with: "#\(hashtag.name)")
+    }
+    
+    var view: some View {
+        AutocompleteHashtagsView()
+    }
+    
+    struct AutocompleteHashtagsView: View {
+        @EnvironmentObject private var controller: AutocompleteHashtagsController
+        
+        var body: some View {
+            ScrollView(.horizontal) {
+                HStack(spacing: 8) {
+                    ForEach(controller.hashtags, id: \.name) { hashtag in
+                        Button(action: { controller.autocomplete(with: hashtag) }) {
+                            Text(verbatim: "#\(hashtag.name)")
+                                .foregroundColor(Color(uiColor: .label))
+                        }
+                        .frame(height: 30)
+                        .padding(.vertical, 8)
+                    }
+                    
+                    Spacer()
+                }
+                .padding(.horizontal, 8)
+                .animation(.linear(duration: 0.2), value: controller.hashtags)
+            }
+        }
+    }
+    
+    
+}

Packages/ComposeUI/Sources/ComposeUI/Controllers/AutocompleteMentionsController.swift

@@ -0,0 +1,178 @@
+//
+//  AutocompleteMentionsController.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/25/23.
+//
+
+import SwiftUI
+import Combine
+import Pachyderm
+import TuskerComponents
+
+class AutocompleteMentionsController: ViewController {
+    
+    unowned let composeController: ComposeController
+    var mastodonController: ComposeMastodonContext { composeController.mastodonController }
+    
+    private var stateCancellable: AnyCancellable?
+    
+    @Published private var accounts: [AnyAccount] = []
+    private var searchTask: Task<Void, Never>?
+    
+    init(composeController: ComposeController) {
+        self.composeController = composeController
+        
+        stateCancellable = composeController.$currentInput
+            .compactMap { $0 }
+            .flatMap { $0.autocompleteStatePublisher }
+            .compactMap {
+                if case .mention(let s) = $0 {
+                    return s
+                } else {
+                    return nil
+                }
+            }
+            .debounce(for: .milliseconds(250), scheduler: DispatchQueue.main)
+            .sink { [unowned self] query in
+                self.searchTask?.cancel()
+                self.searchTask = Task {
+                    await self.queryChanged(query)
+                }
+            }
+    }
+    
+    @MainActor
+    private func queryChanged(_ query: String) async {
+        guard !query.isEmpty else {
+            accounts = []
+            return
+        }
+        
+        let localSearchTask = Task {
+            // we only want to search locally if the search API call takes more than .25sec or it fails
+            try await Task.sleep(nanoseconds: 250 * NSEC_PER_MSEC)
+            
+            let results = self.mastodonController.searchCachedAccounts(query: query)
+            try Task.checkCancellation()
+            
+            if !results.isEmpty {
+                self.loadAccounts(results.map { .init(value: $0) }, query: query)
+            }
+        }
+        
+        let accounts = try? await mastodonController.run(Client.searchForAccount(query: query)).0
+        guard let accounts,
+              !Task.isCancelled else {
+            return
+        }
+        localSearchTask.cancel()
+        
+       loadAccounts(accounts.map { .init(value: $0) }, query: query)
+    }
+    
+    @MainActor
+    private func loadAccounts(_ accounts: [AnyAccount], query: String) {
+        guard case .mention(query) = composeController.currentInput?.autocompleteState else {
+            return
+        }
+        
+        // when sorting account suggestions, ignore the domain component of the acct unless the user is typing it themself
+        let ignoreDomain = !query.contains("@")
+        
+        self.accounts =
+            accounts.map { (account) -> (AnyAccount, (matched: Bool, score: Int)) in
+                let fuzzyStr = ignoreDomain ? String(account.value.acct.split(separator: "@").first!) : account.value.acct
+                let res = (account, FuzzyMatcher.match(pattern: query, str: fuzzyStr))
+                return res
+            }
+            .filter(\.1.matched)
+            .map { (account, res) -> (AnyAccount, Int) in
+                // give higher weight to accounts that the user follows or is followed by
+                var score = res.score
+                if let relationship = mastodonController.cachedRelationship(for: account.value.id) {
+                    if relationship.following {
+                        score += 3
+                    }
+                    if relationship.followedBy {
+                        score += 2
+                    }
+                }
+                return (account, score)
+            }
+            .sorted { $0.1 > $1.1 }
+            .map(\.0)
+    }
+    
+    private func autocomplete(with account: AnyAccount) {
+        guard let input = composeController.currentInput else {
+            return
+        }
+        input.autocomplete(with: "@\(account.value.acct)")
+    }
+    
+    var view: some View {
+        AutocompleteMentionsView()
+    }
+    
+    struct AutocompleteMentionsView: View {
+        @EnvironmentObject private var controller: AutocompleteMentionsController
+        
+        var body: some View {
+            ScrollView(.horizontal) {
+                HStack(spacing: 8) {
+                    ForEach(controller.accounts) { account in
+                        AutocompleteMentionButton(account: account)
+                    }
+                    
+                    Spacer()
+                }
+                .padding(.horizontal, 8)
+                .animation(.linear(duration: 0.2), value: controller.accounts)
+            }
+            .onDisappear {
+                controller.searchTask?.cancel()
+            }
+        }
+    }
+    
+    private struct AutocompleteMentionButton: View {
+        @EnvironmentObject private var composeController: ComposeController
+        @EnvironmentObject private var controller: AutocompleteMentionsController
+        let account: AnyAccount
+        
+        var body: some View {
+            Button(action: { controller.autocomplete(with: account) }) {
+                HStack(spacing: 4) {
+                    AvatarImageView(
+                        url: account.value.avatar,
+                        size: 30,
+                        style: composeController.config.avatarStyle,
+                        fetchAvatar: composeController.fetchAvatar
+                    )
+                    
+                    VStack(alignment: .leading) {
+                        controller.composeController.displayNameLabel(account.value, .subheadline, 14)
+                            .foregroundColor(.primary)
+                        
+                        Text(verbatim: "@\(account.value.acct)")
+                            .font(.caption)
+                            .foregroundColor(.primary)
+                    }
+                }
+            }
+            .frame(height: 30)
+            .padding(.vertical, 8)
+        }
+    }
+}
+
+fileprivate struct AnyAccount: Equatable, Identifiable {
+    let value: any AccountProtocol
+    
+    var id: String { value.id }
+    
+    static func ==(lhs: AnyAccount, rhs: AnyAccount) -> Bool {
+        return lhs.value.id == rhs.value.id
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/Controllers/ComposeController.swift

@@ -0,0 +1,499 @@
+//
+//  ComposeController.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/4/23.
+//
+
+import SwiftUI
+import Combine
+import Pachyderm
+import TuskerComponents
+import MatchedGeometryPresentation
+import CoreData
+
+public final class ComposeController: ViewController {
+    public typealias FetchAttachment = (URL) async  -> UIImage?
+    public typealias FetchStatus = (String) -> (any StatusProtocol)?
+    public typealias DisplayNameLabel = (any AccountProtocol, Font.TextStyle, CGFloat) -> AnyView
+    public typealias CurrentAccountContainerView = (AnyView) -> AnyView
+    public typealias ReplyContentView = (any StatusProtocol, @escaping (CGFloat) -> Void) -> AnyView
+    public typealias EmojiImageView = (Emoji) -> AnyView
+    
+    @Published public private(set) var draft: Draft
+    @Published public var config: ComposeUIConfig
+    @Published public var mastodonController: ComposeMastodonContext
+    let fetchAvatar: AvatarImageView.FetchAvatar
+    let fetchAttachment: FetchAttachment
+    let fetchStatus: FetchStatus
+    let displayNameLabel: DisplayNameLabel
+    let currentAccountContainerView: CurrentAccountContainerView
+    let replyContentView: ReplyContentView
+    let emojiImageView: EmojiImageView
+    
+    @Published public var currentAccount: (any AccountProtocol)?
+    @Published public var showToolbar = true
+    @Published public var deleteDraftOnDisappear = true
+    
+    @Published var autocompleteController: AutocompleteController!
+    @Published var toolbarController: ToolbarController!
+    @Published var attachmentsListController: AttachmentsListController!
+    
+    // this property is here rather than on the AttachmentsListController so that the ComposeView
+    // updates when it changes, because changes to it may alter postButtonEnabled
+    @Published var attachmentsMissingDescriptions = Set<UUID>()
+    @Published var focusedAttachment: (DraftAttachment, AttachmentThumbnailController)?
+    let scrollToAttachment = PassthroughSubject<UUID, Never>()
+    @Published var contentWarningBecomeFirstResponder = false
+    @Published var mainComposeTextViewBecomeFirstResponder = false
+    @Published var currentInput: (any ComposeInput)? = nil
+    @Published var shouldEmojiAutocompletionBeginExpanded = false
+    @Published var isShowingSaveDraftSheet = false
+    @Published var isShowingDraftsList = false
+    @Published var poster: PostService?
+    @Published var postError: PostService.Error?
+    @Published public private(set) var didPostSuccessfully = false
+    @Published var hasChangedLanguageSelection = false
+    
+    private var isDisappearing = false
+    private var userConfirmedDelete = false
+    
+    var isPosting: Bool {
+        poster != nil
+    }
+    
+    var charactersRemaining: Int {
+        let instanceFeatures = mastodonController.instanceFeatures
+        let limit = instanceFeatures.maxStatusChars
+        let cwCount = draft.contentWarningEnabled ? draft.contentWarning.count : 0
+        return limit - (cwCount + CharacterCounter.count(text: draft.text, for: instanceFeatures))
+    }
+    
+    var postButtonEnabled: Bool {
+        draft.editedStatusID != nil ||
+            (draft.hasContent
+                && charactersRemaining >= 0
+                && !isPosting
+                && attachmentsListController.isValid
+                && isPollValid)
+    }
+    
+    private var isPollValid: Bool {
+        draft.poll == nil || draft.poll!.pollOptions.allSatisfy { !$0.text.isEmpty }
+    }
+    
+    public var navigationTitle: String {
+        if let id = draft.inReplyToID,
+           let status = fetchStatus(id) {
+            return "Reply to @\(status.account.acct)"
+        } else if draft.editedStatusID != nil {
+            return "Edit Post"
+        } else {
+            return "New Post"
+        }
+    }
+    
+    public init(
+        draft: Draft,
+        config: ComposeUIConfig,
+        mastodonController: ComposeMastodonContext,
+        fetchAvatar: @escaping AvatarImageView.FetchAvatar,
+        fetchAttachment: @escaping FetchAttachment,
+        fetchStatus: @escaping FetchStatus,
+        displayNameLabel: @escaping DisplayNameLabel,
+        currentAccountContainerView: @escaping CurrentAccountContainerView = { $0 },
+        replyContentView: @escaping ReplyContentView,
+        emojiImageView: @escaping EmojiImageView
+    ) {
+        self.draft = draft
+        self.config = config
+        self.mastodonController = mastodonController
+        self.fetchAvatar = fetchAvatar
+        self.fetchAttachment = fetchAttachment
+        self.fetchStatus = fetchStatus
+        self.displayNameLabel = displayNameLabel
+        self.currentAccountContainerView = currentAccountContainerView
+        self.replyContentView = replyContentView
+        self.emojiImageView = emojiImageView
+        
+        self.autocompleteController = AutocompleteController(parent: self)
+        self.toolbarController = ToolbarController(parent: self)
+        self.attachmentsListController = AttachmentsListController(parent: self)
+        
+        if #available(iOS 16.0, *) {
+            NotificationCenter.default.addObserver(self, selector: #selector(currentInputModeChanged), name: UITextInputMode.currentInputModeDidChangeNotification, object: nil)
+        }
+        NotificationCenter.default.addObserver(self, selector: #selector(managedObjectsDidChange), name: .NSManagedObjectContextObjectsDidChange, object: DraftsPersistentContainer.shared.viewContext)
+    }
+    
+    public var view: some View {
+        ComposeView(poster: poster)
+            .environment(\.managedObjectContext, DraftsPersistentContainer.shared.viewContext)
+            .environmentObject(draft)
+            .environmentObject(mastodonController.instanceFeatures)
+            .environment(\.composeUIConfig, config)
+    }
+    
+    @MainActor
+    @objc private func managedObjectsDidChange(_ notification: Foundation.Notification) {
+        if let deleted = notification.userInfo?[NSDeletedObjectsKey] as? Set<NSManagedObject>,
+           deleted.contains(where: { $0.objectID == self.draft.objectID }),
+           !isDisappearing {
+            self.config.dismiss(.cancel)
+        }
+    }
+    
+    public func canPaste(itemProviders: [NSItemProvider]) -> Bool {
+        guard itemProviders.allSatisfy({ $0.canLoadObject(ofClass: DraftAttachment.self) }) else {
+            return false
+        }
+        if mastodonController.instanceFeatures.mastodonAttachmentRestrictions {
+            if draft.draftAttachments.allSatisfy({ $0.type == .image }) {
+                // if providers are videos, this technically allows invalid video/image combinations
+                return itemProviders.count + draft.attachments.count <= 4
+            } else {
+                return false
+            }
+        } else {
+            return true
+        }
+    }
+    
+    public func paste(itemProviders: [NSItemProvider]) {
+        for provider in itemProviders where provider.canLoadObject(ofClass: DraftAttachment.self) {
+            provider.loadObject(ofClass: DraftAttachment.self) { object, error in
+                guard let attachment = object as? DraftAttachment else { return }
+                DispatchQueue.main.async {
+                    guard self.attachmentsListController.canAddAttachment else { return }
+                    DraftsPersistentContainer.shared.viewContext.insert(attachment)
+                    attachment.draft = self.draft
+                    self.draft.attachments.add(attachment)
+                }
+            }
+        }
+    }
+    
+    @MainActor
+    func cancel() {
+        if draft.hasContent {
+            isShowingSaveDraftSheet = true
+        } else {
+            deleteDraftOnDisappear = true
+            config.dismiss(.cancel)
+        }
+    }
+    
+    @MainActor
+    func cancel(deleteDraft: Bool) {
+        deleteDraftOnDisappear = true
+        userConfirmedDelete = deleteDraft
+        config.dismiss(.cancel)
+    }
+    
+    func postStatus() {
+        guard !isPosting,
+              draft.editedStatusID != nil || draft.hasContent else {
+            return
+        }
+        
+        Task { @MainActor in
+            let poster = PostService(mastodonController: mastodonController, config: config, draft: draft)
+            self.poster = poster
+            
+            // try to resign the first responder, if there is one.
+            // otherwise, the existence of the poster changes the .disabled modifier which causes the keyboard to hide
+            // and the first responder to change during a view update, which in turn triggers a bunch of state changes
+            UIApplication.shared.sendAction(#selector(UIResponder.resignFirstResponder), to: nil, from: nil, for: nil)
+            
+            do {
+                try await poster.post()
+                
+                deleteDraftOnDisappear = true
+                didPostSuccessfully = true
+                
+                // wait .25 seconds so the user can see the progress bar has completed
+                try? await Task.sleep(nanoseconds: 250_000_000)
+                
+                // don't unset the poster, so the ui remains disabled while dismissing
+                
+                config.dismiss(.post)
+                
+            } catch let error as PostService.Error {
+                self.postError = error
+                self.poster = nil
+            } catch {
+                fatalError("unreachable")
+            }
+        }
+    }
+    
+    func showDrafts() {
+        isShowingDraftsList = true
+    }
+    
+    func selectDraft(_ newDraft: Draft) {
+        let oldDraft = self.draft
+        self.draft = newDraft
+        
+        if !oldDraft.hasContent {
+            DraftsPersistentContainer.shared.viewContext.delete(oldDraft)
+        }
+        DraftsPersistentContainer.shared.save()
+    }
+    
+    func onDisappear() {
+        isDisappearing = true
+        if deleteDraftOnDisappear && (!draft.hasContent || didPostSuccessfully || userConfirmedDelete) {
+            DraftsPersistentContainer.shared.viewContext.delete(draft)
+        }
+        DraftsPersistentContainer.shared.save()
+    }
+    
+    func toggleContentWarning() {
+        draft.contentWarningEnabled.toggle()
+        if draft.contentWarningEnabled {
+            contentWarningBecomeFirstResponder = true
+        }
+    }
+    
+    @available(iOS 16.0, *)
+    @objc private func currentInputModeChanged() {
+        guard let mode = currentInput?.textInputMode,
+              let code = LanguagePicker.codeFromInputMode(mode),
+              !hasChangedLanguageSelection && !draft.hasContent else {
+            return
+        }
+        draft.language = code.identifier
+    }
+    
+    struct ComposeView: View {
+        @OptionalObservedObject var poster: PostService?
+        @EnvironmentObject var controller: ComposeController
+        @EnvironmentObject var draft: Draft
+        @StateObject private var keyboardReader = KeyboardReader()
+        @State private var globalFrameOutsideList = CGRect.zero
+        
+        init(poster: PostService?) {
+            self.poster = poster
+        }
+        
+        var config: ComposeUIConfig {
+            controller.config
+        }
+        
+        var body: some View {
+            NavigationView {
+                navRoot
+            }
+            .navigationViewStyle(.stack)
+        }
+        
+        private var navRoot: some View {
+            ZStack(alignment: .top) {
+                // just using .background doesn't work; for some reason it gets inset immediately after the software keyboard is dismissed
+                config.backgroundColor
+                    .edgesIgnoringSafeArea(.all)
+                
+                ScrollViewReader { proxy in
+                    mainList
+                        .onReceive(controller.scrollToAttachment) { id in
+                            proxy.scrollTo(id, anchor: .center)
+                        }
+                }
+                
+                if let poster = poster {
+                    // can't use SwiftUI.ProgressView because there's no UIProgressView.Style.bar equivalent, see FB8587149
+                    WrappedProgressView(value: poster.currentStep, total: poster.totalSteps)
+                }
+            }
+            .safeAreaInset(edge: .bottom, spacing: 0) {
+                if controller.showToolbar {
+                    VStack(spacing: 0) {
+                        ControllerView(controller: { controller.autocompleteController })
+                            .transition(.move(edge: .bottom))
+                            .animation(.default, value: controller.currentInput?.autocompleteState)
+                        
+                        ControllerView(controller: { controller.toolbarController })
+                    }
+                    // on iPadOS15, the toolbar ends up below the keyboard's toolbar without this
+                    .padding(.bottom, keyboardInset)
+                    .transition(.move(edge: .bottom))
+                }
+            }
+            .toolbar {
+                ToolbarItem(placement: .cancellationAction) { cancelButton }
+                ToolbarItem(placement: .confirmationAction) { postButton }
+            }
+            .background(GeometryReader { proxy in
+                Color.clear
+                    .preference(key: GlobalFrameOutsideListPrefKey.self, value: proxy.frame(in: .global))
+                    .onPreferenceChange(GlobalFrameOutsideListPrefKey.self) { newValue in
+                        globalFrameOutsideList = newValue
+                    }
+            })
+            .sheet(isPresented: $controller.isShowingDraftsList) {
+                ControllerView(controller: { DraftsController(parent: controller, isPresented: $controller.isShowingDraftsList) })
+            }
+            .alertWithData("Error Posting", data: $controller.postError, actions: { _ in
+                Button("OK") {}
+            }, message: { error in
+                Text(error.localizedDescription)
+            })
+            .matchedGeometryPresentation(id: Binding(get: { () -> UUID?? in
+                let id = controller.focusedAttachment?.0.id
+                // this needs to be a double optional, since the type used for for the presentationID in the geom source is a UUID?
+                return id.map { Optional.some($0) }
+            }, set: {
+                if $0 == nil {
+                    controller.focusedAttachment = nil
+                } else {
+                    fatalError()
+                }
+            }), backgroundColor: .black) {
+                ControllerView(controller: {
+                    FocusedAttachmentController(
+                        parent: controller,
+                        attachment: controller.focusedAttachment!.0,
+                        thumbnailController: controller.focusedAttachment!.1
+                    )
+                })
+            }
+            .onDisappear(perform: controller.onDisappear)
+            .navigationTitle(controller.navigationTitle)
+            .navigationBarTitleDisplayMode(.inline)
+        }
+        
+        private var mainList: some View {
+            List {
+                if let id = draft.inReplyToID,
+                   let status = controller.fetchStatus(id) {
+                    ReplyStatusView(
+                        status: status,
+                        rowTopInset: 8,
+                        globalFrameOutsideList: globalFrameOutsideList
+                    )
+                    // i don't know why swiftui can't infer this from the status that's passed into the ReplyStatusView changing
+                    .id(id)
+                    .listRowInsets(EdgeInsets(top: 8, leading: 8, bottom: 4, trailing: 8))
+                    .listRowSeparator(.hidden)
+                    .listRowBackground(config.backgroundColor)
+                }
+                
+                HeaderView(currentAccount: controller.currentAccount, charsRemaining: controller.charactersRemaining)
+                    .listRowInsets(EdgeInsets(top: draft.inReplyToID == nil ? 8 : 4, leading: 8, bottom: 4, trailing: 8))
+                    .listRowSeparator(.hidden)
+                    .listRowBackground(config.backgroundColor)
+                
+                if draft.contentWarningEnabled {
+                    EmojiTextField(
+                        text: $draft.contentWarning,
+                        placeholder: "Write your warning here",
+                        maxLength: nil,
+                        becomeFirstResponder: $controller.contentWarningBecomeFirstResponder,
+                        focusNextView: $controller.mainComposeTextViewBecomeFirstResponder
+                    )
+                        .listRowInsets(EdgeInsets(top: 4, leading: 8, bottom: 4, trailing: 8))
+                        .listRowSeparator(.hidden)
+                        .listRowBackground(config.backgroundColor)
+                }
+                
+                MainTextView()
+                    .listRowInsets(EdgeInsets(top: 4, leading: 8, bottom: 4, trailing: 8))
+                    .listRowSeparator(.hidden)
+                    .listRowBackground(config.backgroundColor)
+                
+                if let poll = draft.poll {
+                    ControllerView(controller: { PollController(parent: controller, poll: poll) })
+                        .listRowInsets(EdgeInsets(top: 4, leading: 8, bottom: 8, trailing: 8))
+                        .listRowSeparator(.hidden)
+                        .listRowBackground(config.backgroundColor)
+                }
+                
+                ControllerView(controller: { controller.attachmentsListController })
+                    .listRowInsets(EdgeInsets(top: 4, leading: 8, bottom: 8, trailing: 8))
+                    .listRowBackground(config.backgroundColor)
+            }
+            .listStyle(.plain)
+            .scrollDismissesKeyboardInteractivelyIfAvailable()
+            .disabled(controller.isPosting)
+        }
+        
+        private var cancelButton: some View {
+            Button(action: controller.cancel) {
+                Text("Cancel")
+                    // otherwise all Buttons in the nav bar are made semibold
+                    .font(.system(size: 17, weight: .regular))
+            }
+            .confirmationDialog("Are you sure?", isPresented: $controller.isShowingSaveDraftSheet) {
+                // edit drafts can't be saved
+                if draft.editedStatusID == nil {
+                    Button(action: { controller.cancel(deleteDraft: false) }) {
+                        Text("Save Draft")
+                    }
+                    Button(role: .destructive, action: { controller.cancel(deleteDraft: true) }) {
+                        Text("Delete Draft")
+                    }
+                } else {
+                    Button(role: .destructive, action: { controller.cancel(deleteDraft: true) }) {
+                        Text("Cancel Edit")
+                    }
+                }
+            }
+        }
+        
+        @ViewBuilder
+        private var postButton: some View {
+            if draft.hasContent || draft.editedStatusID != nil || !controller.config.allowSwitchingDrafts {
+                Button(action: controller.postStatus) {
+                    Text(draft.editedStatusID == nil ? "Post" : "Edit")
+                }
+                .keyboardShortcut(.return, modifiers: .command)
+                .disabled(!controller.postButtonEnabled)
+            } else {
+                Button(action: controller.showDrafts) {
+                    Text("Drafts")
+                }
+            }
+        }
+        
+        @available(iOS, obsoleted: 16.0)
+        private var keyboardInset: CGFloat {
+            if #unavailable(iOS 16.0),
+               UIDevice.current.userInterfaceIdiom == .pad,
+               keyboardReader.isVisible {
+                return ToolbarController.height
+            } else {
+                return 0
+            }
+        }
+    }
+}
+
+private extension View {
+    @available(iOS, obsoleted: 16.0)
+    @ViewBuilder
+    func scrollDismissesKeyboardInteractivelyIfAvailable() -> some View {
+        if #available(iOS 16.0, *) {
+            self.scrollDismissesKeyboard(.interactively)
+        } else {
+            self
+        }
+    }
+}
+
+private struct GlobalFrameOutsideListPrefKey: PreferenceKey {
+    static var defaultValue: CGRect = .zero
+    static func reduce(value: inout CGRect, nextValue: () -> CGRect) {
+        value = nextValue()
+    }
+}
+
+private struct ComposeUIConfigEnvironmentKey: EnvironmentKey {
+    static let defaultValue = ComposeUIConfig()
+}
+extension EnvironmentValues {
+    var composeUIConfig: ComposeUIConfig {
+        get { self[ComposeUIConfigEnvironmentKey.self] }
+        set { self[ComposeUIConfigEnvironmentKey.self] = newValue }
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/Controllers/DraftsController.swift

@@ -0,0 +1,174 @@
+//
+//  DraftsController.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/7/23.
+//
+
+import SwiftUI
+import TuskerComponents
+import CoreData
+
+class DraftsController: ViewController {
+    
+    unowned let parent: ComposeController
+    @Binding var isPresented: Bool
+    
+    @Published var draftForDifferentReply: Draft?
+    
+    init(parent: ComposeController, isPresented: Binding<Bool>) {
+        self.parent = parent
+        self._isPresented = isPresented
+    }
+    
+    var view: some View {
+        DraftsRepresentable()
+    }
+    
+    func maybeSelectDraft(_ draft: Draft) {
+        if draft.inReplyToID != parent.draft.inReplyToID,
+           parent.draft.hasContent {
+            draftForDifferentReply = draft
+        } else {
+            confirmSelectDraft(draft)
+        }
+    }
+    
+    func cancelSelectingDraft() {
+        draftForDifferentReply = nil
+    }
+    
+    func confirmSelectDraft(_ draft: Draft) {
+        parent.selectDraft(draft)
+        closeDrafts()
+    }
+    
+    func deleteDraft(_ draft: Draft) {
+        DraftsPersistentContainer.shared.viewContext.delete(draft)
+    }
+    
+    func closeDrafts() {
+        isPresented = false
+        DraftsPersistentContainer.shared.save()
+    }
+    
+    struct DraftsRepresentable: UIViewControllerRepresentable {
+        typealias UIViewControllerType = UIHostingController<DraftsView>
+        
+        func makeUIViewController(context: Context) -> UIHostingController<DraftsController.DraftsView> {
+            return UIHostingController(rootView: DraftsView())
+        }
+        
+        func updateUIViewController(_ uiViewController: UIHostingController<DraftsController.DraftsView>, context: Context) {
+        }
+    }
+    
+    struct DraftsView: View {
+        @EnvironmentObject private var controller: DraftsController
+        @EnvironmentObject private var currentDraft: Draft
+        @FetchRequest(sortDescriptors: [SortDescriptor(\Draft.lastModified, order: .reverse)]) private var drafts: FetchedResults<Draft>
+        
+        var body: some View {
+            NavigationView {
+                List {
+                    ForEach(drafts) { draft in
+                        Button(action: { controller.maybeSelectDraft(draft) }) {
+                            DraftRow(draft: draft)
+                        }
+                        .contextMenu {
+                            Button(role: .destructive, action: { controller.deleteDraft(draft) }) {
+                                Label("Delete Draft", systemImage: "trash")
+                            }
+                        }
+                        .ifLet(controller.parent.config.userActivityForDraft(draft), modify: { view, activity in
+                            view.onDrag { activity }
+                        })
+                    }
+                    .onDelete { indices in
+                        indices.map { drafts[$0] }.forEach(controller.deleteDraft)
+                    }
+                }
+                .listStyle(.plain)
+                .navigationTitle("Drafts")
+                .navigationBarTitleDisplayMode(.inline)
+                .toolbar {
+                    ToolbarItem(placement: .cancellationAction) { cancelButton }
+                }
+            }
+            .alertWithData("Different Reply", data: $controller.draftForDifferentReply) { draft in
+                Button(role: .cancel, action: controller.cancelSelectingDraft) {
+                    Text("Cancel")
+                }
+                Button(action: { controller.confirmSelectDraft(draft) }) {
+                    Text("Restore Draft")
+                }
+            } message: { _ in
+                Text("The selected draft is a reply to a different post, do you wish to use it?")
+            }
+            .onAppear {
+                drafts.nsPredicate = NSPredicate(format: "accountID == %@ AND id != %@ AND lastModified != nil", controller.parent.mastodonController.accountInfo!.id, currentDraft.id as NSUUID)
+            }
+        }
+        
+        private var cancelButton: some View {
+            Button(action: controller.closeDrafts) {
+                Text("Cancel")
+            }
+        }
+    }
+}
+
+private struct DraftRow: View {
+    @ObservedObject var draft: Draft
+    @EnvironmentObject private var controller: DraftsController
+    
+    var body: some View {
+        HStack {
+            VStack(alignment: .leading) {
+                if draft.editedStatusID != nil {
+                    // shouldn't happen unless the app crashed/was killed during an edit
+                    Text("Edit")
+                        .font(.body.bold())
+                        .foregroundColor(.orange)
+                }
+                
+                if draft.contentWarningEnabled {
+                    Text(draft.contentWarning)
+                        .font(.body.bold())
+                        .foregroundColor(.secondary)
+                }
+                
+                Text(draft.text)
+                    .font(.body)
+                
+                HStack(spacing: 8) {
+                    ForEach(draft.draftAttachments) { attachment in
+                        ControllerView(controller: { AttachmentThumbnailController(attachment: attachment, parent: controller.parent) })
+                            .aspectRatio(contentMode: .fit)
+                            .clipShape(RoundedRectangle(cornerRadius: 5))
+                            .frame(height: 50)
+                    }
+                }
+            }
+            
+            Spacer()
+            
+            if let lastModified = draft.lastModified {
+                Text(lastModified.formatted(.abbreviatedTimeAgo))
+                    .font(.body)
+                    .foregroundColor(.secondary)
+            }
+        }
+    }
+}
+
+private extension View {
+    @ViewBuilder
+    func ifLet<T, V: View>(_ value: T?, modify: (Self, T) -> V) -> some View {
+        if let value {
+            modify(self, value)
+        } else {
+            self
+        }
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/Controllers/FocusedAttachmentController.swift

@@ -0,0 +1,122 @@
+//
+//  FocusedAttachmentController.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 4/29/23.
+//
+
+import SwiftUI
+import MatchedGeometryPresentation
+import AVKit
+
+class FocusedAttachmentController: ViewController {
+    
+    unowned let parent: ComposeController
+    let attachment: DraftAttachment
+    let thumbnailController: AttachmentThumbnailController
+    private let player: AVPlayer?
+    
+    init(parent: ComposeController, attachment: DraftAttachment, thumbnailController: AttachmentThumbnailController) {
+        self.parent = parent
+        self.attachment = attachment
+        self.thumbnailController = thumbnailController
+        
+        if case let .file(url, type) = attachment.data,
+           type.conforms(to: .movie) {
+            self.player = AVPlayer(url: url)
+            self.player!.isMuted = true
+        } else {
+            self.player = nil
+        }
+    }
+    
+    var view: some View {
+        FocusedAttachmentView(attachment: attachment)
+    }
+    
+    struct FocusedAttachmentView: View {
+        @ObservedObject var attachment: DraftAttachment
+        @EnvironmentObject private var controller: FocusedAttachmentController
+        @Environment(\.dismiss) private var dismiss
+        @FocusState private var textEditorFocused: Bool
+        @EnvironmentObject private var matchedGeomState: MatchedGeometryState
+        
+        var body: some View {
+            VStack(spacing: 0) {
+                Spacer(minLength: 0)
+                
+                if let player = controller.player {
+                    VideoPlayer(player: player)
+                        .matchedGeometryDestination(id: attachment.id)
+                        .onAppear {
+                            player.play()
+                        }
+                } else if #available(iOS 16.0, *) {
+                    ZoomableScrollView {
+                        attachmentView
+                            .matchedGeometryDestination(id: attachment.id)
+                    }
+                } else {
+                    attachmentView
+                        .matchedGeometryDestination(id: attachment.id)
+                }
+                
+                Spacer(minLength: 0)
+                
+                FocusedAttachmentDescriptionView(attachment: attachment)
+                    .environment(\.colorScheme, .dark)
+                    .matchedGeometryDestination(id: AttachmentDescriptionTextViewID(attachment))
+                    .frame(height: 150)
+                    .focused($textEditorFocused)
+            }
+            .background(.black)
+            .overlay(alignment: .topLeading, content: {
+                Button {
+                    // set the mode to dismissing immediately, so that layout changes due to the keyboard hiding
+                    // (which happens before the dismiss animation controller starts running) don't alter the destination frames
+                    if textEditorFocused {
+                        matchedGeomState.mode = .dismissing
+                    }
+                    dismiss()
+                } label: {
+                    Image(systemName: "arrow.down.forward.and.arrow.up.backward")
+                }
+                .buttonStyle(DismissFocusedAttachmentButtonStyle())
+                .padding([.top, .leading], 4)
+            })
+        }
+        
+        private var attachmentView: some View {
+            ControllerView(controller: { controller.thumbnailController })
+                .environment(\.attachmentThumbnailConfiguration, .init(contentMode: .fit, fullSize: true))
+        }
+    }
+}
+
+private struct DismissFocusedAttachmentButtonStyle: ButtonStyle {
+    func makeBody(configuration: Configuration) -> some View {
+        ZStack {
+            RoundedRectangle(cornerRadius: 4)
+                .fill(.black.opacity(0.5))
+            
+            configuration.label
+                .foregroundColor(.white)
+                .imageScale(.large)
+        }
+        .frame(width: 40, height: 40)
+    }
+}
+
+struct AttachmentDescriptionTextViewID: Hashable {
+    let attachmentID: UUID!
+    
+    init(_ attachment: DraftAttachment) {
+        self.attachmentID = attachment.id
+    }
+    
+    func hash(into hasher: inout Hasher) {
+        hasher.combine(attachmentID)
+        hasher.combine("descriptionTextView")
+    }
+}
+

Packages/ComposeUI/Sources/ComposeUI/Controllers/PlaceholderController.swift

@@ -0,0 +1,48 @@
+//
+//  PlaceholderController.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/6/23.
+//
+
+import SwiftUI
+
+final class PlaceholderController: ViewController, PlaceholderViewProvider {
+    
+    private let placeholderView: PlaceholderView = PlaceholderController.makePlaceholderView()
+        
+    static func makePlaceholderView() -> some View {
+        let components = Calendar.current.dateComponents([.month, .day], from: Date())
+        if components.month == 3 && components.day == 14,
+           Date().formatted(date: .numeric, time: .omitted).starts(with: "3") {
+            Text("Happy π day!")
+        } else if components.month == 4 && components.day == 1 {
+            Text("April Fool's!").rotationEffect(.radians(.pi), anchor: .center)
+        } else if components.month == 9 && components.day == 5 {
+            // https://weirder.earth/@noracodes/109276419847254552
+            // https://retrocomputing.stackexchange.com/questions/14763/what-warning-was-given-on-attempting-to-post-to-usenet-circa-1990
+            Text("This program posts news to thousands of machines throughout the entire populated world. Please be sure you know what you are doing.").italic()
+        } else if components.month == 9 && components.day == 21 {
+            Text("Do you remember?")
+        } else if components.month == 10 && components.day == 31 {
+            if .random() {
+                Text("Post something spooky!")
+            } else {
+                Text("Any questions?")
+            }
+        } else {
+            Text("What's on your mind?")
+        }
+    }
+    
+    var view: some View {
+        placeholderView
+    }
+}
+
+// exists to provide access to the type alias since the @State property needs it to be explicit
+private protocol PlaceholderViewProvider {
+    associatedtype PlaceholderView: View
+    @ViewBuilder
+    static func makePlaceholderView() -> PlaceholderView
+}

Packages/ComposeUI/Sources/ComposeUI/Controllers/PollController.swift

@@ -0,0 +1,184 @@
+//
+//  PollController.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/25/23.
+//
+
+import SwiftUI
+import TuskerComponents
+
+class PollController: ViewController {
+    
+    unowned let parent: ComposeController
+    var draft: Draft { parent.draft }
+    let poll: Poll
+    
+    @Published var duration: Duration
+    
+    init(parent: ComposeController, poll: Poll) {
+        self.parent = parent
+        self.poll = poll
+        self.duration = .fromTimeInterval(poll.duration) ?? .oneDay
+    }
+    
+    var view: some View {
+        PollView()
+            .environmentObject(poll)
+    }
+    
+    private func removePoll() {
+        withAnimation {
+            draft.poll = nil
+        }
+    }
+    
+    private func moveOptions(indices: IndexSet, newIndex: Int) {
+        poll.options.moveObjects(at: indices, to: newIndex)
+    }
+    
+    private func removeOption(_ option: PollOption) {
+        poll.options.remove(option)
+    }
+    
+    private var canAddOption: Bool {
+        if let max = parent.mastodonController.instanceFeatures.maxPollOptionsCount {
+            return poll.options.count < max
+        } else {
+            return true
+        }
+    }
+    
+    private func addOption() {
+        let option = PollOption(context: DraftsPersistentContainer.shared.viewContext)
+        option.poll = poll
+        poll.options.add(option)
+    }
+    
+    struct PollView: View {
+        @EnvironmentObject private var controller: PollController
+        @EnvironmentObject private var poll: Poll
+        @Environment(\.colorScheme) private var colorScheme
+        
+        var body: some View {
+            VStack {
+                HStack {
+                    Text("Poll")
+                        .font(.headline)
+                    
+                    Spacer()
+                    
+                    Button(action: controller.removePoll) {
+                        Image(systemName: "xmark")
+                            .imageScale(.small)
+                            .padding(4)
+                    }
+                    .accessibilityLabel("Remove poll")
+                    .buttonStyle(.plain)
+                    .accentColor(buttonForegroundColor)
+                    .background(Circle().foregroundColor(buttonBackgroundColor))
+                    .hoverEffect()
+                }
+                
+                List {
+                    ForEach($poll.pollOptions) { $option in
+                        PollOptionView(option: option, remove: { controller.removeOption(option) })
+                            .frame(height: 36)
+                            .listRowInsets(EdgeInsets(top: 4, leading: 0, bottom: 4, trailing: 0))
+                            .listRowSeparator(.hidden)
+                            .listRowBackground(Color.clear)
+                    }
+                    .onMove(perform: controller.moveOptions)
+                }
+                .listStyle(.plain)
+                .scrollDisabledIfAvailable(true)
+                .frame(height: 44 * CGFloat(poll.options.count))
+                
+                Button(action: controller.addOption) {
+                    Label {
+                        Text("Add Option")
+                    } icon: {
+                        Image(systemName: "plus")
+                            .foregroundColor(.accentColor)
+                    }
+                }
+                .buttonStyle(.borderless)
+                .disabled(!controller.canAddOption)
+                
+                HStack {
+                    MenuPicker(selection: $poll.multiple, options: [
+                        .init(value: true, title: "Allow multiple"),
+                        .init(value: false, title: "Single choice"),
+                    ])
+                    .frame(maxWidth: .infinity)
+                    
+                    MenuPicker(selection: $controller.duration, options: Duration.allCases.map {
+                        .init(value: $0, title: Duration.formatter.string(from: $0.timeInterval)!)
+                    })
+                    .frame(maxWidth: .infinity)
+                }
+            }
+            .padding(8)
+            .background(
+                RoundedRectangle(cornerRadius: 10, style: .continuous)
+                    .foregroundColor(backgroundColor)
+            )
+            .onChange(of: controller.duration) { newValue in
+                poll.duration = newValue.timeInterval
+            }
+        }
+        
+        private var backgroundColor: Color {
+            // in light mode, .secondarySystemBackground has a blue-ish hue, which we don't want
+            colorScheme == .dark ? controller.parent.config.fillColor : Color(white: 0.95)
+        }
+        
+        private var buttonForegroundColor: Color {
+            Color(uiColor: .label)
+        }
+        
+        private var buttonBackgroundColor: Color {
+            Color(white: colorScheme == .dark ? 0.1 : 0.8)
+        }
+    }
+}
+
+extension PollController {
+    enum Duration: Hashable, Equatable, CaseIterable {
+        case fiveMinutes, thirtyMinutes, oneHour, sixHours, oneDay, threeDays, sevenDays
+        
+        static let formatter: DateComponentsFormatter = {
+            let f = DateComponentsFormatter()
+            f.maximumUnitCount = 1
+            f.unitsStyle = .full
+            f.allowedUnits = [.weekOfMonth, .day, .hour, .minute]
+            return f
+        }()
+        
+        static func fromTimeInterval(_ ti: TimeInterval) -> Duration? {
+            for it in allCases where it.timeInterval == ti {
+                return it
+            }
+            return nil
+        }
+        
+        var timeInterval: TimeInterval {
+            switch self {
+            case .fiveMinutes:
+                return 5 * 60
+            case .thirtyMinutes:
+                return 30 * 60
+            case .oneHour:
+                return 60 * 60
+            case .sixHours:
+                return 6 * 60 * 60
+            case .oneDay:
+                return 24 * 60 * 60
+            case .threeDays:
+                return 3 * 24 * 60 * 60
+            case .sevenDays:
+                return 7 * 24 * 60 * 60
+            }
+        }
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/Controllers/ToolbarController.swift

@@ -0,0 +1,167 @@
+//
+//  ToolbarController.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/7/23.
+//
+
+import SwiftUI
+import Pachyderm
+import TuskerComponents
+
+class ToolbarController: ViewController {
+    static let height: CGFloat = 44
+    private static let visibilityOptions: [MenuPicker<Pachyderm.Visibility>.Option] = Pachyderm.Visibility.allCases.map { vis in
+            .init(value: vis, title: vis.displayName, subtitle: vis.subtitle, image: UIImage(systemName: vis.unfilledImageName), accessibilityLabel: "Visibility: \(vis.displayName)")
+    }
+    
+    unowned let parent: ComposeController
+    
+    @Published var minWidth: CGFloat?
+    @Published var realWidth: CGFloat?
+    
+    init(parent: ComposeController) {
+        self.parent = parent
+    }
+    
+    var view: some View {
+        ToolbarView()
+    }
+    
+    func showEmojiPicker() {
+        guard parent.currentInput?.autocompleteState == nil else {
+            return
+        }
+        parent.shouldEmojiAutocompletionBeginExpanded = true
+        parent.currentInput?.beginAutocompletingEmoji()
+    }
+    
+    func formatAction(_ format: StatusFormat) -> () -> Void {
+        { [weak self] in
+            self?.parent.currentInput?.applyFormat(format)
+        }
+    }
+    
+    struct ToolbarView: View {
+        @EnvironmentObject private var draft: Draft
+        @EnvironmentObject private var controller: ToolbarController
+        @EnvironmentObject private var composeController: ComposeController
+        @ScaledMetric(relativeTo: .body) private var imageSize: CGFloat = 22
+        
+        @State private var minWidth: CGFloat?
+        @State private var realWidth: CGFloat?
+        
+        var body: some View {
+            ScrollView(.horizontal, showsIndicators: false) {
+                HStack(spacing: 0) {
+                    cwButton
+                    
+                    MenuPicker(selection: $draft.visibility, options: ToolbarController.visibilityOptions, buttonStyle: .iconOnly)
+                    // the button has a bunch of extra space by default, but combined with what we add it's too much
+                        .padding(.horizontal, -8)
+                        .disabled(draft.editedStatusID != nil)
+                    
+                    if composeController.mastodonController.instanceFeatures.localOnlyPosts {
+                        localOnlyPicker
+                            .padding(.horizontal, -8)
+                            .disabled(draft.editedStatusID != nil)
+                    }
+                    
+                    if let currentInput = composeController.currentInput,
+                       currentInput.toolbarElements.contains(.emojiPicker) {
+                        customEmojiButton
+                    }
+                    
+                    if let currentInput = composeController.currentInput,
+                       currentInput.toolbarElements.contains(.formattingButtons),
+                       composeController.config.contentType != .plain {
+                        
+                        Spacer()
+                        formatButtons
+                    }
+                    
+                    Spacer()
+                    
+                    if #available(iOS 16.0, *),
+                       composeController.mastodonController.instanceFeatures.createStatusWithLanguage {
+                        LanguagePicker(draftLanguage: $draft.language, hasChangedSelection: $composeController.hasChangedLanguageSelection)
+                    }
+                }
+                .padding(.horizontal, 16)
+                .frame(minWidth: minWidth)
+                .background(GeometryReader { proxy in
+                    Color.clear
+                        .preference(key: ToolbarWidthPrefKey.self, value: proxy.size.width)
+                        .onPreferenceChange(ToolbarWidthPrefKey.self) { width in
+                            realWidth = width
+                        }
+                })
+            }
+            .scrollDisabledIfAvailable(realWidth ?? 0 <= minWidth ?? 0)
+            .frame(height: ToolbarController.height)
+            .frame(maxWidth: .infinity)
+            .background(.regularMaterial, ignoresSafeAreaEdges: .bottom)
+            .overlay(alignment: .top) {
+                Divider()
+            }
+            .background(GeometryReader { proxy in
+                Color.clear
+                    .preference(key: ToolbarWidthPrefKey.self, value: proxy.size.width)
+                    .onPreferenceChange(ToolbarWidthPrefKey.self) { width in
+                        minWidth = width
+                    }
+            })
+        }
+        
+        private var cwButton: some View {
+            Button("CW", action: controller.parent.toggleContentWarning)
+                .accessibilityLabel(draft.contentWarningEnabled ? "Remove content warning" : "Add content warning")
+                .padding(5)
+                .hoverEffect()
+        }
+        
+        private var localOnlyPicker: some View {
+            let domain = composeController.mastodonController.accountInfo!.instanceURL.host!
+            return MenuPicker(selection: $draft.localOnly, options: [
+                .init(value: true, title: "Local-only", subtitle: "Only \(domain)", image: UIImage(named: "link.broken")),
+                .init(value: false, title: "Federated", image: UIImage(systemName: "link")),
+            ], buttonStyle: .iconOnly)
+        }
+        
+        private var customEmojiButton: some View {
+            Button(action: controller.showEmojiPicker) {
+                Label("Insert custom emoji", systemImage: "face.smiling")
+            }
+            .labelStyle(.iconOnly)
+            .font(.system(size: imageSize))
+            .padding(5)
+            .hoverEffect()
+            .transition(.opacity.animation(.linear(duration: 0.2)))
+        }
+        
+        private var formatButtons: some View {
+            ForEach(StatusFormat.allCases, id: \.rawValue) { format in
+                Button(action: controller.formatAction(format)) {
+                    if let imageName = format.imageName {
+                        Image(systemName: imageName)
+                            .font(.system(size: imageSize))
+                    } else if let (str, attrs) = format.title {
+                        let container = try! AttributeContainer(attrs, including: \.uiKit)
+                        Text(AttributedString(str, attributes: container))
+                    }
+                }
+                .accessibilityLabel(format.accessibilityLabel)
+                .padding(5)
+                .hoverEffect()
+                .transition(.opacity.animation(.linear(duration: 0.2)))
+            }
+        }
+    }
+}
+
+private struct ToolbarWidthPrefKey: PreferenceKey {
+    static var defaultValue: CGFloat? = nil
+    static func reduce(value: inout CGFloat?, nextValue: () -> CGFloat?) {
+        value = nextValue()
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/CoreData/Draft.swift

@@ -0,0 +1,72 @@
+//
+//  Draft.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 4/22/23.
+//
+
+import CoreData
+import Pachyderm
+
+@objc
+public class Draft: NSManagedObject, Identifiable {
+    @nonobjc public class func fetchRequest() -> NSFetchRequest<Draft> {
+        return NSFetchRequest<Draft>(entityName: "Draft")
+    }
+    
+    @nonobjc public class func fetchRequest(id: UUID) -> NSFetchRequest<Draft> {
+        let req = NSFetchRequest<Draft>(entityName: "Draft")
+        req.predicate = NSPredicate(format: "id = %@", id as NSUUID)
+        return req
+    }
+    
+    @NSManaged public var accountID: String
+    @NSManaged public var contentWarning: String
+    @NSManaged public var contentWarningEnabled: Bool
+    @NSManaged public var editedStatusID: String?
+    @NSManaged public var id: UUID
+    @NSManaged public var initialText: String
+    @NSManaged public var inReplyToID: String?
+    @NSManaged public var language: String? // ISO 639 language code
+    @NSManaged public var lastModified: Date!
+    @NSManaged public var localOnly: Bool
+    @NSManaged public var text: String
+    @NSManaged private var visibilityStr: String
+    
+    @NSManaged internal var attachments: NSMutableOrderedSet
+    @NSManaged public var poll: Poll?
+    
+    public var visibility: Visibility {
+        get {
+            Visibility(rawValue: visibilityStr) ?? .public
+        }
+        set {
+            visibilityStr = newValue.rawValue
+        }
+    }
+    
+    public var draftAttachments: [DraftAttachment] {
+        get {
+            attachments.array as! [DraftAttachment]
+        }
+        set {
+            attachments = NSMutableOrderedSet(array: newValue)
+        }
+    }
+    
+    public override func awakeFromInsert() {
+        super.awakeFromInsert()
+        id = UUID()
+        lastModified = Date()
+    }
+    
+}
+
+extension Draft {
+    public var hasContent: Bool {
+        (!text.isEmpty && text != initialText) ||
+            (contentWarningEnabled && !contentWarning.isEmpty) ||
+            attachments.count > 0 ||
+            poll?.hasContent == true
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/CoreData/DraftAttachment.swift

@@ -0,0 +1,317 @@
+//
+//  DraftAttachment.swift
+//  CoreData
+//
+//  Created by Shadowfacts on 4/22/23.
+//
+
+import CoreData
+import PencilKit
+import UniformTypeIdentifiers
+import Photos
+import InstanceFeatures
+import Pachyderm
+
+private let decoder = PropertyListDecoder()
+private let encoder = PropertyListEncoder()
+
+@objc
+public final class DraftAttachment: NSManagedObject, Identifiable {
+    
+    @nonobjc public class func fetchRequest() -> NSFetchRequest<DraftAttachment> {
+        return NSFetchRequest<DraftAttachment>(entityName: "DraftAttachment")
+    }
+    
+    @NSManaged internal var assetID: String?
+    @NSManaged public var attachmentDescription: String
+    @NSManaged internal private(set) var drawingData: Data?
+    @NSManaged public var editedAttachmentID: String?
+    @NSManaged private var editedAttachmentKindString: String?
+    @NSManaged public var editedAttachmentURL: URL?
+    @NSManaged public var fileURL: URL?
+    @NSManaged internal var fileType: String?
+    @NSManaged public var id: UUID!
+    
+    @NSManaged internal var draft: Draft
+    
+    public var drawing: PKDrawing? {
+        get {
+            if let drawingData,
+               let drawing = try? decoder.decode(PKDrawing.self, from: drawingData) {
+                return drawing
+            } else {
+                return nil
+            }
+        }
+        set {
+            drawingData = try! encoder.encode(newValue)
+        }
+    }
+    
+    public var data: AttachmentData {
+        if let editedAttachmentID {
+            return .editing(editedAttachmentID, editedAttachmentKind!, editedAttachmentURL!)
+        } else if let assetID {
+            return .asset(assetID)
+        } else if let drawing {
+            return .drawing(drawing)
+        } else if let fileURL, let fileType {
+            return .file(fileURL, UTType(fileType)!)
+        } else {
+            return .none
+        }
+    }
+    
+    public var editedAttachmentKind: Attachment.Kind? {
+        get {
+            editedAttachmentKindString.flatMap(Attachment.Kind.init(rawValue:))
+        }
+        set {
+            editedAttachmentKindString = newValue?.rawValue
+        }
+    }
+    
+    public enum AttachmentData {
+        case asset(String)
+        case drawing(PKDrawing)
+        case file(URL, UTType)
+        case editing(String, Attachment.Kind, URL)
+        case none
+    }
+    
+    public override func prepareForDeletion() {
+        super.prepareForDeletion()
+        if let fileURL {
+            try? FileManager.default.removeItem(at: fileURL)
+        }
+    }
+    
+}
+
+extension DraftAttachment {
+    var type: AttachmentType {
+        if let editedAttachmentKind {
+            switch editedAttachmentKind {
+            case .image:
+                return .image
+            case .video:
+                return .video
+            case .gifv:
+                return .video
+            case .audio, .unknown:
+                return .unknown
+            }
+        } else if let assetID {
+            guard let asset = PHAsset.fetchAssets(withLocalIdentifiers: [assetID], options: nil).firstObject else {
+                return .unknown
+            }
+            switch asset.mediaType {
+            case .image:
+                return .image
+            case .video:
+                return .video
+            default:
+                return .unknown
+            }
+        } else if drawingData != nil {
+            return .image
+        } else if let fileType,
+                  let type = UTType(fileType) {
+            if type.conforms(to: .image) {
+                return .image
+            } else if type.conforms(to: .movie) {
+                return .video
+            } else {
+                return .unknown
+            }
+        } else {
+            return .unknown
+        }
+    }
+    
+    enum AttachmentType {
+        case image, video, unknown
+    }
+}
+
+//private let attachmentTypeIdentifier = "space.vaccor.Tusker.composition-attachment"
+
+private let jpegType = UTType.jpeg.identifier
+private let pngType = UTType.png.identifier
+private let mp4Type = UTType.mpeg4Movie.identifier
+private let quickTimeType = UTType.quickTimeMovie.identifier
+private let gifType = UTType.gif.identifier
+
+extension DraftAttachment: NSItemProviderReading {
+    public static var readableTypeIdentifiersForItemProvider: [String] {
+        // todo: is there a better way of handling movies than manually adding all possible UTI types?
+        // just using kUTTypeMovie doesn't work, because we need the actually type in order to get the file extension
+        // without the file extension, getting the thumbnail and exporting the video for attachment upload fails
+        [/*typeIdentifier, */gifType, jpegType, pngType, mp4Type, quickTimeType]
+    }
+    
+    public static func object(withItemProviderData data: Data, typeIdentifier: String) throws -> DraftAttachment {
+        let attachment = DraftAttachment(entity: DraftsPersistentContainer.shared.persistentStoreCoordinator.managedObjectModel.entitiesByName["DraftAttachment"]!, insertInto: nil)
+        attachment.id = UUID()
+        attachment.fileURL = try writeDataToFile(data, id: attachment.id, type: UTType(typeIdentifier)!)
+        attachment.fileType = typeIdentifier
+        attachment.attachmentDescription = ""
+        return attachment
+    }
+    
+    static var attachmentsDirectory: URL {
+        let containerURL = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: "group.space.vaccor.Tusker")!
+        return containerURL.appendingPathComponent("Documents").appendingPathComponent("attachments")
+    }
+    
+    static func writeDataToFile(_ data: Data, id: UUID, type: UTType) throws -> URL {
+        let directoryURL = attachmentsDirectory
+        try FileManager.default.createDirectory(at: directoryURL, withIntermediateDirectories: true)
+        let attachmentURL = directoryURL.appendingPathComponent(id.uuidString, conformingTo: type)
+        try data.write(to: attachmentURL)
+        return attachmentURL
+    }
+}
+
+// MARK: Exporting
+
+extension DraftAttachment {
+    func getData(features: InstanceFeatures, skipAllConversion: Bool = false, completion: @escaping (Result<(Data, UTType), ExportError>) -> Void) {
+        if let assetID {
+            guard let asset = PHAsset.fetchAssets(withLocalIdentifiers: [assetID], options: nil).firstObject else {
+                completion(.failure(.noAsset))
+                return
+            }
+            if asset.mediaType == .image {
+                let options = PHImageRequestOptions()
+                options.version = .current
+                options.deliveryMode = .highQualityFormat
+                options.resizeMode = .none
+                options.isNetworkAccessAllowed = true
+                PHImageManager.default().requestImageDataAndOrientation(for: asset, options: options) { data, dataUTI, orientation, info in
+                    guard let data, let dataUTI else {
+                        completion(.failure(.missingAssetData))
+                        return
+                    }
+                    let processed = Self.processImageData(data, type: UTType(dataUTI)!, features: features, skipAllConversion: skipAllConversion)
+                    completion(.success(processed))
+                }
+            } else if asset.mediaType == .video {
+                let options = PHVideoRequestOptions()
+                options.version = .current
+                options.deliveryMode = .automatic
+                options.isNetworkAccessAllowed = true
+                PHImageManager.default().requestExportSession(forVideo: asset, options: options, exportPreset: AVAssetExportPresetHighestQuality) { exportSession, info in
+                    if let exportSession {
+                        Self.exportVideoData(session: exportSession, completion: completion)
+                    } else if let error = info?[PHImageErrorKey] as? Error {
+                        completion(.failure(.videoExport(error)))
+                    } else {
+                        completion(.failure(.noVideoExportSession))
+                    }
+                }
+            } else {
+                completion(.failure(.unknownAssetType))
+            }
+        } else if let drawingData {
+            guard let drawing = try? decoder.decode(PKDrawing.self, from: drawingData) else {
+                completion(.failure(.loadingDrawing))
+                return
+            }
+            let image = drawing.imageInLightMode(from: drawing.bounds, scale: 1)
+            completion(.success((image.pngData()!, .png)))
+        } else if let fileURL, let fileType {
+            let type = UTType(fileType)!
+            
+            if type.conforms(to: .movie) {
+                let asset = AVURLAsset(url: fileURL)
+                guard let session = AVAssetExportSession(asset: asset, presetName: AVAssetExportPresetHighestQuality) else {
+                    completion(.failure(.noVideoExportSession))
+                    return
+                }
+                Self.exportVideoData(session: session, completion: completion)
+            } else {
+                let fileData: Data
+                do {
+                    fileData = try Data(contentsOf: fileURL)
+                } catch {
+                    completion(.failure(.loadingData))
+                    return
+                }
+                
+                if type != .gif,
+                   type.conforms(to: .image) {
+                    let result = Self.processImageData(fileData, type: type, features: features, skipAllConversion: skipAllConversion)
+                    completion(.success(result))
+                } else {
+                    completion(.success((fileData, type)))
+                }
+            }
+        } else {
+            completion(.failure(.noData))
+        }
+    }
+    
+    private static func processImageData(_ data: Data, type: UTType, features: InstanceFeatures, skipAllConversion: Bool) -> (Data, UTType) {
+        guard !skipAllConversion else {
+            return (data, type)
+        }
+        
+        var data = data
+        var type = type
+        
+        if type != .png && type != .jpeg,
+           let image = UIImage(data: data) {
+            // The quality of 0.8 was chosen completely arbitrarily, it may need to be tuned in the future.
+            data = image.jpegData(compressionQuality: 0.8)!
+            type = .jpeg
+        }
+        
+        let image = CIImage(data: data)!
+        let needsColorSpaceConversion = features.needsWideColorGamutHack && image.colorSpace?.name != CGColorSpace.sRGB
+        
+        // neither Mastodon nor Pleroma handles HEIC well, so convert to JPEG
+        // they also do a bad job converting wide color gamut images (they seem to just drop the profile, letting the wide-gamut values be reinterprete as sRGB)
+        // if that changes in the future, we'll need to pass the InstanceFeatures in here somehow and gate the conversion
+        if needsColorSpaceConversion || type == .heic {
+            let context = CIContext()
+            let colorSpace = needsColorSpaceConversion || image.colorSpace != nil ? CGColorSpace(name: CGColorSpace.sRGB)! : image.colorSpace!
+            if type == .png {
+                data = context.pngRepresentation(of: image, format: .ARGB8, colorSpace: colorSpace)!
+            } else {
+                data = context.jpegRepresentation(of: image, colorSpace: colorSpace)!
+                type = .jpeg
+            }
+        }
+        
+        return (data, type)
+    }
+    
+    private static func exportVideoData(session: AVAssetExportSession, completion: @escaping (Result<(Data, UTType), ExportError>) -> Void) {
+        session.outputFileType = .mp4
+        session.outputURL = FileManager.default.temporaryDirectory.appendingPathComponent("exported_video_\(UUID())").appendingPathExtension("mp4")
+        session.exportAsynchronously {
+            guard session.status == .completed else {
+                completion(.failure(.videoExport(session.error!)))
+                return
+            }
+            do {
+                let data = try Data(contentsOf: session.outputURL!)
+                completion(.success((data, .mpeg4Movie)))
+            } catch {
+                completion(.failure(.videoExport(error)))
+            }
+        }
+    }
+    
+    enum ExportError: Error {
+        case noAsset
+        case unknownAssetType
+        case missingAssetData
+        case videoExport(Error)
+        case noVideoExportSession
+        case loadingDrawing
+        case loadingData
+        case noData
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/CoreData/Drafts.xcdatamodeld/Drafts.xcdatamodel/contents

@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<model type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="21754" systemVersion="22D49" minimumToolsVersion="Automatic" sourceLanguage="Swift" userDefinedModelVersionIdentifier="">
+    <entity name="Draft" representedClassName="ComposeUI.Draft" syncable="YES">
+        <attribute name="accountID" attributeType="String"/>
+        <attribute name="contentWarning" attributeType="String" defaultValueString=""/>
+        <attribute name="contentWarningEnabled" attributeType="Boolean" defaultValueString="NO" usesScalarValueType="YES"/>
+        <attribute name="editedStatusID" optional="YES" attributeType="String"/>
+        <attribute name="id" attributeType="UUID" usesScalarValueType="NO"/>
+        <attribute name="initialText" attributeType="String"/>
+        <attribute name="inReplyToID" optional="YES" attributeType="String"/>
+        <attribute name="language" optional="YES" attributeType="String"/>
+        <attribute name="lastModified" attributeType="Date" usesScalarValueType="NO"/>
+        <attribute name="localOnly" attributeType="Boolean" defaultValueString="NO" usesScalarValueType="YES"/>
+        <attribute name="text" attributeType="String" defaultValueString=""/>
+        <attribute name="visibilityStr" optional="YES" attributeType="String"/>
+        <relationship name="attachments" toMany="YES" deletionRule="Cascade" ordered="YES" destinationEntity="DraftAttachment" inverseName="draft" inverseEntity="DraftAttachment"/>
+        <relationship name="poll" optional="YES" maxCount="1" deletionRule="Cascade" destinationEntity="Poll" inverseName="draft" inverseEntity="Poll"/>
+    </entity>
+    <entity name="DraftAttachment" representedClassName="ComposeUI.DraftAttachment" syncable="YES">
+        <attribute name="assetID" optional="YES" attributeType="String"/>
+        <attribute name="attachmentDescription" attributeType="String" defaultValueString=""/>
+        <attribute name="drawingData" optional="YES" attributeType="Binary"/>
+        <attribute name="editedAttachmentID" optional="YES" attributeType="String"/>
+        <attribute name="editedAttachmentKindString" optional="YES" attributeType="String"/>
+        <attribute name="editedAttachmentURL" optional="YES" attributeType="URI"/>
+        <attribute name="fileType" optional="YES" attributeType="String"/>
+        <attribute name="fileURL" optional="YES" attributeType="URI"/>
+        <attribute name="id" attributeType="UUID" usesScalarValueType="NO"/>
+        <relationship name="draft" optional="YES" maxCount="1" deletionRule="Nullify" destinationEntity="Draft" inverseName="attachments" inverseEntity="Draft"/>
+    </entity>
+    <entity name="Poll" representedClassName="ComposeUI.Poll" syncable="YES">
+        <attribute name="duration" optional="YES" attributeType="Double" defaultValueString="0.0" usesScalarValueType="YES"/>
+        <attribute name="multiple" attributeType="Boolean" usesScalarValueType="YES"/>
+        <relationship name="draft" optional="YES" maxCount="1" deletionRule="Nullify" destinationEntity="Draft" inverseName="poll" inverseEntity="Draft"/>
+        <relationship name="options" toMany="YES" deletionRule="Cascade" ordered="YES" destinationEntity="PollOption" inverseName="poll" inverseEntity="PollOption"/>
+    </entity>
+    <entity name="PollOption" representedClassName="ComposeUI.PollOption" syncable="YES">
+        <attribute name="text" attributeType="String" defaultValueString=""/>
+        <relationship name="poll" optional="YES" maxCount="1" deletionRule="Nullify" destinationEntity="Poll" inverseName="options" inverseEntity="Poll"/>
+    </entity>
+    <entity name="TestEntity" representedClassName="TestEntity" syncable="YES" codeGenerationType="class">
+        <attribute name="id" optional="YES" attributeType="UUID" usesScalarValueType="NO"/>
+    </entity>
+</model>

Packages/ComposeUI/Sources/ComposeUI/CoreData/DraftsPersistentContainer.swift

@@ -0,0 +1,210 @@
+//
+//  DraftsPersistentContainer.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 4/22/23.
+//
+
+import Foundation
+import CoreData
+import OSLog
+import Pachyderm
+
+private let logger = Logger(subsystem: Bundle.main.bundleIdentifier!, category: "DraftsPersistentContainer")
+
+public class DraftsPersistentContainer: NSPersistentContainer {
+    
+    public static let shared = DraftsPersistentContainer()
+    
+    private static let managedObjectModel: NSManagedObjectModel = {
+        let url = Bundle.module.url(forResource: "Drafts", withExtension: "momd")!
+        return NSManagedObjectModel(contentsOf: url)!
+    }()
+    
+    private var lastHistoryToken: NSPersistentHistoryToken!
+    
+    init() {
+        super.init(name: "Drafts", managedObjectModel: DraftsPersistentContainer.managedObjectModel)
+        
+        let containerURL = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: "group.space.vaccor.Tusker")!
+        let documentsURL = containerURL.appendingPathComponent("Documents")
+        let storeDesc = NSPersistentStoreDescription(url: documentsURL.appendingPathComponent("drafts").appendingPathExtension("sqlite"))
+        storeDesc.type = NSSQLiteStoreType
+        storeDesc.setOption(true as NSNumber, forKey: NSPersistentHistoryTrackingKey)
+        storeDesc.setOption(true as NSNumber, forKey: NSPersistentStoreRemoteChangeNotificationPostOptionKey)
+        
+        persistentStoreDescriptions = [
+            storeDesc
+        ]
+        
+        loadPersistentStores { _, error in
+            if let error {
+                fatalError("Loading persistent store: \(error)")
+            }
+        }
+        
+        viewContext.automaticallyMergesChangesFromParent = true
+        viewContext.mergePolicy = NSMergePolicy.mergeByPropertyObjectTrump
+        
+        lastHistoryToken = persistentStoreCoordinator.currentPersistentHistoryToken(fromStores: nil)
+        
+        NotificationCenter.default.addObserver(self, selector: #selector(remoteChanges(_:)), name: .NSPersistentStoreRemoteChange, object: persistentStoreCoordinator)
+    }
+    
+    public func save() {
+        guard viewContext.hasChanges else {
+            return
+        }
+        do {
+            try viewContext.save()
+        } catch {
+            logger.error("Failed to save: \(String(describing: error))")
+        }
+    }
+    
+    public func migrate(from url: URL, completion: @escaping (Result<(), any Error>) -> Void) {
+        performBackgroundTask { context in
+            let result = DraftsMigrator.migrate(from: url, to: context)
+            completion(result)
+            try! context.save()
+        }
+    }
+    
+    public func getDraft(id: UUID) -> Draft? {
+        let req = Draft.fetchRequest(id: id)
+        return try? viewContext.fetch(req).first
+    }
+    
+    public func createDraft(
+        accountID: String,
+        text: String,
+        contentWarning: String,
+        inReplyToID: String?,
+        visibility: Visibility,
+        localOnly: Bool
+    ) -> Draft {
+        let draft = Draft(context: viewContext)
+        draft.accountID = accountID
+        draft.text = text
+        draft.initialText = text
+        draft.contentWarning = contentWarning
+        draft.contentWarningEnabled = !contentWarning.isEmpty
+        draft.inReplyToID = inReplyToID
+        draft.visibility = visibility
+        draft.localOnly = localOnly
+        save()
+        return draft
+    }
+    
+    public func createEditDraft(
+        accountID: String,
+        source: StatusSource,
+        inReplyToID: String?,
+        visibility: Visibility,
+        localOnly: Bool,
+        attachments: [Attachment],
+        poll: Pachyderm.Poll?
+    ) -> Draft {
+        let draft = Draft(context: viewContext)
+        draft.accountID = accountID
+        draft.editedStatusID = source.id
+        draft.text = source.text
+        draft.initialText = source.text
+        draft.contentWarning = source.spoilerText
+        draft.contentWarningEnabled = !source.spoilerText.isEmpty
+        draft.inReplyToID = inReplyToID
+        draft.visibility = visibility
+        draft.localOnly = localOnly
+        for attachment in attachments {
+            createEditDraftAttachment(attachment, in: draft)
+        }
+        if let existingPoll = poll {
+            let poll = Poll(context: viewContext)
+            poll.draft = draft
+            draft.poll = poll
+            if let expiresAt = existingPoll.expiresAt,
+               !existingPoll.effectiveExpired {
+                poll.duration = PollController.Duration.allCases.max(by: {
+                    (expiresAt.timeIntervalSinceNow - $0.timeInterval) < (expiresAt.timeIntervalSinceNow - $1.timeInterval)
+                })!.timeInterval
+            } else {
+                poll.duration = PollController.Duration.oneDay.timeInterval
+            }
+            poll.multiple = existingPoll.multiple
+            // rmeove default empty options
+            for opt in poll.pollOptions {
+                viewContext.delete(opt)
+            }
+            for existingOpt in existingPoll.options {
+                let opt = PollOption(context: viewContext)
+                opt.poll = poll
+                poll.options.add(opt)
+                opt.text = existingOpt.title
+            }
+        }
+        save()
+        return draft
+    }
+    
+    private func createEditDraftAttachment(_ attachment: Attachment, in draft: Draft) {
+        let draftAttachment = DraftAttachment(context: viewContext)
+        draftAttachment.id = UUID()
+        draftAttachment.attachmentDescription = attachment.description ?? ""
+        draftAttachment.editedAttachmentID = attachment.id
+        draftAttachment.editedAttachmentKind = attachment.kind
+        draftAttachment.editedAttachmentURL = attachment.url
+        draftAttachment.draft = draft
+        draft.attachments.add(draftAttachment)
+    }
+    
+    public func removeOrphanedAttachments(completion: @escaping () -> Void) {
+        guard let files = try? FileManager.default.contentsOfDirectory(at: DraftAttachment.attachmentsDirectory, includingPropertiesForKeys: nil),
+              !files.isEmpty else {
+            return
+        }
+        performBackgroundTask { context in
+            let allAttachmentsReq = DraftAttachment.fetchRequest()
+            allAttachmentsReq.predicate = NSPredicate(format: "fileURL != nil")
+            guard let allAttachments = try? context.fetch(allAttachmentsReq) else {
+                return
+            }
+            let orphaned = Set(files).subtracting(allAttachments.lazy.compactMap(\.fileURL))
+            for url in orphaned {
+                do {
+                    try FileManager.default.removeItem(at: url)
+                } catch {
+                    logger.error("Failed to remove orphaned attachment: \(String(describing: error), privacy: .public)")
+                }
+            }
+            completion()
+        }
+    }
+    
+    @objc private func remoteChanges(_ notification: Foundation.Notification) {
+        guard let newHistoryToken = notification.userInfo?[NSPersistentHistoryTokenKey] as? NSPersistentHistoryToken else {
+            return
+        }
+        
+        // todo: should this be on a background context?
+        let context = viewContext
+        context.perform {
+            let predicate = NSPredicate(format: "(%@ < token) AND (token <= %@)", self.lastHistoryToken, newHistoryToken)
+            
+            let historyRequest = NSPersistentHistoryTransaction.fetchRequest!
+            historyRequest.predicate = predicate
+            let request = NSPersistentHistoryChangeRequest.fetchHistory(withFetch: historyRequest)
+            if let result = try? context.execute(request) as? NSPersistentHistoryResult,
+               let transactions = result.result as? [NSPersistentHistoryTransaction] {
+                for transaction in transactions {
+                    guard let userInfo = transaction.objectIDNotification().userInfo else {
+                        continue
+                    }
+                    NSManagedObjectContext.mergeChanges(fromRemoteContextSave: userInfo, into: [context])
+                }
+            }
+            
+            self.lastHistoryToken = newHistoryToken
+        }
+    }
+    
+}

Packages/ComposeUI/Sources/ComposeUI/CoreData/Poll.swift

@@ -0,0 +1,46 @@
+//
+//  Poll.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 4/22/23.
+//
+
+import CoreData
+
+@objc
+public class Poll: NSManagedObject {
+    
+    @NSManaged public var duration: TimeInterval
+    @NSManaged public var multiple: Bool
+    
+    @NSManaged public var draft: Draft
+    @NSManaged public var options: NSMutableOrderedSet
+    
+    public var pollOptions: [PollOption] {
+        get {
+            options.array as! [PollOption]
+        }
+        set {
+            options = NSMutableOrderedSet(array: newValue)
+        }
+    }
+    
+    public override func awakeFromInsert() {
+        super.awakeFromInsert()
+        self.multiple = false
+        self.duration = 24 * 60 * 60 // 1 day
+        if let managedObjectContext {
+            self.options = [
+                PollOption(context: managedObjectContext),
+                PollOption(context: managedObjectContext),
+            ]
+        }
+    }
+    
+}
+
+extension Poll {
+    public var hasContent: Bool {
+        pollOptions.allSatisfy { !$0.text.isEmpty }
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/CoreData/PollOption.swift

@@ -0,0 +1,21 @@
+//
+//  PollOption.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 4/22/23.
+//
+
+import CoreData
+
+@objc
+public class PollOption: NSManagedObject, Identifiable {
+    
+    public var id: NSManagedObjectID {
+        objectID
+    }
+    
+    @NSManaged public var text: String
+    
+    @NSManaged public var poll: Poll
+    
+}

Packages/ComposeUI/Sources/ComposeUI/DraftsMigrator.swift

@@ -0,0 +1,255 @@
+//
+//  DraftsMigrator.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 4/22/23.
+//
+
+import Foundation
+import OSLog
+import UniformTypeIdentifiers
+import Pachyderm
+import PencilKit
+import CoreData
+
+struct DraftsMigrator {
+    private init() {}
+    
+    private static let logger = Logger(subsystem: Bundle.main.bundleIdentifier!, category: "DraftsMigrator")
+    private static let decoder = PropertyListDecoder()
+    
+    static func migrate(from url: URL, to context: NSManagedObjectContext) -> Result<(), any Error> {
+        do {
+            let data = try Data(contentsOf: url)
+            let container = try decoder.decode(DraftsContainer.self, from: data)
+            for old in container.drafts.values {
+                let new = Draft(context: context)
+                new.id = old.id
+                new.lastModified = old.lastModified
+                new.accountID = old.accountID
+                new.text = old.text
+                new.contentWarningEnabled = old.contentWarningEnabled
+                new.contentWarning = old.contentWarning
+                new.inReplyToID = old.inReplyToID
+                new.visibility = old.visibility
+                new.localOnly = old.localOnly
+                new.initialText = old.initialText
+                
+                if let oldPoll = old.poll {
+                    let newPoll = Poll(context: context)
+                    newPoll.draft = new
+                    new.poll = newPoll
+                    newPoll.multiple = oldPoll.multiple
+                    newPoll.duration = oldPoll.duration
+                    for oldOption in oldPoll.options {
+                        let newOption = PollOption(context: context)
+                        newOption.text = oldOption.text
+                        newOption.poll = newPoll
+                        newPoll.options.add(newOption)
+                    }
+                }
+                
+                for oldAttachment in old.attachments {
+                    let newAttachment = DraftAttachment(context: context)
+                    newAttachment.draft = new
+                    new.attachments.add(newAttachment)
+                    newAttachment.id = oldAttachment.id
+                    newAttachment.attachmentDescription = oldAttachment.attachmentDescription
+                    switch oldAttachment.data {
+                    case .asset(let assetID):
+                        newAttachment.assetID = assetID
+                    case .image(let data, originalType: let type):
+                        newAttachment.fileURL = try? DraftAttachment.writeDataToFile(data, id: newAttachment.id, type: type)
+                        newAttachment.fileType = type.identifier
+                    case .video(_):
+                        fatalError("unreachable, video attachments weren't encodable")
+                    case .drawing(let drawing):
+                        newAttachment.drawing = drawing
+                    case .gif(let data):
+                        newAttachment.fileURL = try? DraftAttachment.writeDataToFile(data, id: newAttachment.id, type: .gif)
+                        newAttachment.fileType = UTType.gif.identifier
+                    }
+                }
+            }
+            
+            try FileManager.default.removeItem(at: url)
+        } catch {
+            logger.error("Error migrating: \(String(describing: error))")
+            return .failure(error)
+        }
+        return .success(())
+    }
+    
+    // MARK: Supporting Types
+    
+    struct DraftsContainer: Decodable {
+        let drafts: [UUID: OldDraft]
+        
+        init(drafts: [UUID: OldDraft]) {
+            self.drafts = drafts
+        }
+        
+        init(from decoder: Decoder) throws {
+            let container = try decoder.container(keyedBy: CodingKeys.self)
+            self.drafts = try container.decode([UUID: SafeDraft].self, forKey: .drafts).compactMapValues(\.draft)
+        }
+        
+        enum CodingKeys: CodingKey {
+            case drafts
+        }
+    }
+    
+    // a container that always succeeds at decoding
+    // so if a single draft can't be decoded, we don't lose all drafts
+    struct SafeDraft: Decodable {
+        let draft: OldDraft?
+
+        init(from decoder: Decoder) throws {
+            let container = try decoder.singleValueContainer()
+            self.draft = try? container.decode(OldDraft.self)
+        }
+    }
+    
+    struct OldDraft: Decodable {
+        let id: UUID
+        let lastModified: Date
+        let accountID: String
+        let text: String
+        let contentWarningEnabled: Bool
+        let contentWarning: String
+        let attachments: [OldDraftAttachment]
+        let inReplyToID: String?
+        let visibility: Visibility
+        let poll: OldPoll?
+        let localOnly: Bool
+        let initialText: String
+        
+        init(from decoder: Decoder) throws {
+            let container = try decoder.container(keyedBy: CodingKeys.self)
+            
+            self.id = try container.decode(UUID.self, forKey: .id)
+            self.lastModified = try container.decode(Date.self, forKey: .lastModified)
+            
+            self.accountID = try container.decode(String.self, forKey: .accountID)
+            self.text = try container.decode(String.self, forKey: .text)
+            self.contentWarningEnabled = try container.decode(Bool.self, forKey: .contentWarningEnabled)
+            self.contentWarning = try container.decode(String.self, forKey: .contentWarning)
+            self.attachments = try container.decode([OldDraftAttachment].self, forKey: .attachments)
+            self.inReplyToID = try container.decode(String?.self, forKey: .inReplyToID)
+            self.visibility = try container.decode(Visibility.self, forKey: .visibility)
+            self.poll = try container.decode(OldPoll?.self, forKey: .poll)
+            self.localOnly = try container.decodeIfPresent(Bool.self, forKey: .localOnly) ?? false
+            
+            self.initialText = try container.decode(String.self, forKey: .initialText)
+        }
+        
+        enum CodingKeys: String, CodingKey {
+            case id
+            case lastModified
+            
+            case accountID
+            case text
+            case contentWarningEnabled
+            case contentWarning
+            case attachments
+            case inReplyToID
+            case visibility
+            case poll
+            case localOnly
+            
+            case initialText
+        }
+    }
+    
+    struct OldDraftAttachment: Decodable {
+        let id: UUID
+        let data: OldDraftAttachmentData
+        let attachmentDescription: String
+        
+        init(from decoder: Decoder) throws {
+            let container = try decoder.container(keyedBy: CodingKeys.self)
+            
+            self.id = try container.decode(UUID.self, forKey: .id)
+            self.data = try container.decode(OldDraftAttachmentData.self, forKey: .data)
+            self.attachmentDescription = try container.decode(String.self, forKey: .attachmentDescription)
+        }
+    
+        enum CodingKeys: String, CodingKey {
+            case id
+            case data
+            case attachmentDescription
+        }
+    }
+    
+    enum OldDraftAttachmentData: Decodable {
+        case asset(String)
+        case image(Data, originalType: UTType)
+        case video(URL)
+        case drawing(PKDrawing)
+        case gif(Data)
+        
+        init(from decoder: Decoder) throws {
+            let container = try decoder.container(keyedBy: CodingKeys.self)
+            
+            switch try container.decode(String.self, forKey: .type) {
+            case "asset":
+                let identifier = try container.decode(String.self, forKey: .assetIdentifier)
+                self = .asset(identifier)
+            case "image":
+                let data = try container.decode(Data.self, forKey: .imageData)
+                if let type = try container.decodeIfPresent(UTType.self, forKey: .imageType) {
+                    self = .image(data, originalType: type)
+                } else {
+                    guard let image = UIImage(data: data) else {
+                        throw DecodingError.dataCorruptedError(forKey: .imageData, in: container, debugDescription: "CompositionAttachment data could not be decoded into UIImage")
+                    }
+                    let jpegData = image.jpegData(compressionQuality: 1)!
+                    self = .image(jpegData, originalType: .jpeg)
+                }
+            case "drawing":
+                let drawingData = try container.decode(Data.self, forKey: .drawing)
+                let drawing = try PKDrawing(data: drawingData)
+                self = .drawing(drawing)
+            default:
+                throw DecodingError.dataCorruptedError(forKey: .type, in: container, debugDescription: "CompositionAttachment type must be one of image, asset, or drawing")
+            }
+        }
+        
+        enum CodingKeys: CodingKey {
+            case type
+            case imageData
+            case imageType
+            /// The local identifier of the PHAsset for this attachment
+            case assetIdentifier
+            /// The PKDrawing object for this attachment.
+            case drawing
+        }
+    }
+    
+    struct OldPoll: Decodable {
+        let options: [OldPollOption]
+        let multiple: Bool
+        let duration: TimeInterval
+        
+        init(from decoder: Decoder) throws {
+            let container = try decoder.container(keyedBy: CodingKeys.self)
+            self.options = try container.decode([OldPollOption].self, forKey: .options)
+            self.multiple = try container.decode(Bool.self, forKey: .multiple)
+            self.duration = try container.decode(TimeInterval.self, forKey: .duration)
+        }
+        
+        enum CodingKeys: String, CodingKey {
+            case options
+            case multiple
+            case duration
+        }
+    }
+    
+    struct OldPollOption: Decodable {
+        let text: String
+        
+        init(from decoder: Decoder) throws {
+            self.text = try decoder.singleValueContainer().decode(String.self)
+        }
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/FuzzyMatcher.swift

@@ -0,0 +1,62 @@
+//
+//  FuzzyMatcher.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 10/10/20.
+//  Copyright © 2020 Shadowfacts. All rights reserved.
+//
+
+import Foundation
+
+struct FuzzyMatcher {
+    
+    private init() {}
+    
+    /// Rudimentary string fuzzy matching algorithm.
+    ///
+    /// Operates on UTF-8 code points, so attempting to match strings which include characters composed of
+    /// multiple code points may produce unexpected results.
+    ///
+    /// Scoring is as follows:
+    /// +2 points for every char in `pattern` that occurs in `str` sequentially
+    /// -2 points for every char in `pattern` that does not occur in `str` sequentially
+    /// -1 point for every char in `str` skipped between matching chars from the `pattern`
+    static func match(pattern: String, str: String) -> (matched: Bool, score: Int) {
+        let pattern = pattern.lowercased()
+        let str = str.lowercased()
+        
+        var patternIndex = pattern.utf8.startIndex
+        var lastStrMatchIndex: String.UTF8View.Index?
+        var strIndex = str.utf8.startIndex
+        
+        var score = 0
+        
+        while patternIndex < pattern.utf8.endIndex && strIndex < str.utf8.endIndex {
+            let patternChar = pattern.utf8[patternIndex]
+            let strChar = str.utf8[strIndex]
+            if patternChar == strChar {
+                let distance = str.utf8.distance(from: lastStrMatchIndex ?? str.utf8.startIndex, to: strIndex)
+                if distance > 1 {
+                    score -= distance - 1
+                }
+                
+                patternIndex = pattern.utf8.index(after: patternIndex)
+                lastStrMatchIndex = strIndex
+                strIndex = str.utf8.index(after: strIndex)
+                
+                score += 2
+            } else {
+                strIndex = str.utf8.index(after: strIndex)
+                
+                if strIndex >= str.utf8.endIndex {
+                    patternIndex = pattern.utf8.index(after: patternIndex)
+                    strIndex = str.utf8.index(after: lastStrMatchIndex ?? str.utf8.startIndex)
+                    score -= 2
+                }
+            }
+        }
+        
+        return (score > 0, score)
+    }
+    
+}

Packages/ComposeUI/Sources/ComposeUI/KeyboardReader.swift

@@ -0,0 +1,39 @@
+//
+//  KeyboardReader.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/7/23.
+//
+
+import UIKit
+import Combine
+
+@available(iOS, obsoleted: 16.0)
+class KeyboardReader: ObservableObject {
+//    @Published var isVisible = false
+    @Published var keyboardHeight: CGFloat = 0
+    
+    var isVisible: Bool {
+        // when a hardware keyboard is connected, the height is very short, so we don't consider that being "visible"
+        keyboardHeight > 72
+    }
+    
+    init() {
+        NotificationCenter.default.addObserver(self, selector: #selector(willShow), name: UIResponder.keyboardWillShowNotification, object: nil)
+        NotificationCenter.default.addObserver(self, selector: #selector(willHide), name: UIResponder.keyboardWillHideNotification, object: nil)
+    }
+    
+    @objc func willShow(_ notification: Foundation.Notification) {
+        let endFrame = notification.userInfo![UIResponder.keyboardFrameEndUserInfoKey] as! CGRect
+//        isVisible = endFrame.height > 72
+        keyboardHeight = endFrame.height
+    }
+    
+    @objc func willHide() {
+        // sometimes willHide is called during a SwiftUI view update
+        DispatchQueue.main.async {
+//            self.isVisible = false
+            self.keyboardHeight = 0
+        }
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/Model/AttachmentData.swift

@@ -1,6 +1,6 @@
 //
-//  CompositionAttachmentData.swift
-//  Tusker
+//  AttachmentData.swift
+//  ComposeUI
 //
 //  Created by Shadowfacts on 1/1/20.
 //  Copyright © 2020 Shadowfacts. All rights reserved.
@@ -10,10 +10,11 @@ import UIKit
 import Photos
 import UniformTypeIdentifiers
 import PencilKit
+import InstanceFeatures
 
-enum CompositionAttachmentData {
+enum AttachmentData {
     case asset(PHAsset)
-    case image(UIImage)
+    case image(Data, originalType: UTType)
     case video(URL)
     case drawing(PKDrawing)
     case gif(Data)
@@ -22,7 +23,7 @@ enum CompositionAttachmentData {
         switch self {
         case let .asset(asset):
             return asset.attachmentType!
-        case .image(_):
+        case .image(_, originalType: _):
             return .image
         case .video(_):
             return .video
@@ -53,11 +54,21 @@ enum CompositionAttachmentData {
     
     func getData(features: InstanceFeatures, skipAllConversion: Bool = false, completion: @escaping (Result<(Data, UTType), Error>) -> Void) {
         switch self {
-        case let .image(image):
-            // Export as JPEG instead of PNG, otherweise photos straight from the camera are too large
-            // for Mastodon in its default configuration (max of 10MB).
+        case let .image(originalData, originalType):
+            let data: Data
+            let type: UTType
+            switch originalType {
+            case .png, .jpeg:
+                data = originalData
+                type =  originalType
+            default:
+                let image = UIImage(data: originalData)!
                 // The quality of 0.8 was chosen completely arbitrarily, it may need to be tuned in the future.
-            completion(.success((image.jpegData(compressionQuality: 0.8)!, .jpeg)))
+                data = image.jpegData(compressionQuality: 0.8)!
+                type = .jpeg
+            }
+            let processed = processImageData(data, type: type, features: features, skipAllConversion: skipAllConversion)
+            completion(.success(processed))
         case let .asset(asset):
             if asset.mediaType == .image {
                 let options = PHImageRequestOptions()
@@ -66,38 +77,12 @@ enum CompositionAttachmentData {
                 options.resizeMode = .none
                 options.isNetworkAccessAllowed = true
                 PHImageManager.default().requestImageDataAndOrientation(for: asset, options: options) { (data, dataUTI, orientation, info) in
-                    guard var data = data, let dataUTI = dataUTI else {
+                    guard let data = data, let dataUTI = dataUTI else {
                         completion(.failure(.missingData))
                         return
                     }
-                    
-                    guard !skipAllConversion else {
-                        completion(.success((data, UTType(dataUTI)!)))
-                        return
-                    }
-                    
-                    let utType: UTType
-                    let image = CIImage(data: data)!
-                    let needsColorSpaceConversion = features.needsWideColorGamutHack && image.colorSpace?.name != CGColorSpace.sRGB
-    
-                    // neither Mastodon nor Pleroma handles HEIC well, so convert to JPEG
-                    // they also do a bad job converting wide color gamut images (they seem to just drop the profile, letting the wide-gamut values be reinterprete as sRGB)
-                    // if that changes in the future, we'll need to pass the InstanceFeatures in here somehow and gate the conversion
-                    if needsColorSpaceConversion || dataUTI == "public.heic" {
-                        let context = CIContext()
-                        let colorSpace = needsColorSpaceConversion || image.colorSpace != nil ? CGColorSpace(name: CGColorSpace.sRGB)! : image.colorSpace!
-                        if dataUTI == "public.png" {
-                            data = context.pngRepresentation(of: image, format: .ARGB8, colorSpace: colorSpace)!
-                            utType = .png
-                        } else {
-                            data = context.jpegRepresentation(of: image, colorSpace: colorSpace)!
-                            utType = .jpeg
-                        }
-                    } else {
-                        utType = UTType(dataUTI)!
-                    }
-    
-                    completion(.success((data, utType)))
+                    let processed = processImageData(data, type: UTType(dataUTI)!, features: features, skipAllConversion: skipAllConversion)
+                    completion(.success(processed))
                 }
             } else if asset.mediaType == .video {
                 let options = PHVideoRequestOptions()
@@ -106,7 +91,7 @@ enum CompositionAttachmentData {
                 options.version = .current
                 PHImageManager.default().requestExportSession(forVideo: asset, options: options, exportPreset: AVAssetExportPresetHighestQuality) { (exportSession, info) in
                     if let exportSession = exportSession {
-                        CompositionAttachmentData.exportVideoData(session: exportSession, completion: completion)
+                        AttachmentData.exportVideoData(session: exportSession, completion: completion)
                     } else if let error = info?[PHImageErrorKey] as? Error {
                         completion(.failure(.videoExport(error)))
                     } else {
@@ -122,7 +107,7 @@ enum CompositionAttachmentData {
                 completion(.failure(.noVideoExportSession))
                 return
             }
-            CompositionAttachmentData.exportVideoData(session: session, completion: completion)
+            AttachmentData.exportVideoData(session: session, completion: completion)
             
         case let .drawing(drawing):
             let image = drawing.imageInLightMode(from: drawing.bounds, scale: 1)
@@ -132,6 +117,33 @@ enum CompositionAttachmentData {
         }
     }
     
+    private func processImageData(_ data: Data, type: UTType, features: InstanceFeatures, skipAllConversion: Bool) -> (Data, UTType) {
+        guard !skipAllConversion else {
+            return (data, type)
+        }
+        
+        var data = data
+        var type = type
+        let image = CIImage(data: data)!
+        let needsColorSpaceConversion = features.needsWideColorGamutHack && image.colorSpace?.name != CGColorSpace.sRGB
+        
+        // neither Mastodon nor Pleroma handles HEIC well, so convert to JPEG
+        // they also do a bad job converting wide color gamut images (they seem to just drop the profile, letting the wide-gamut values be reinterprete as sRGB)
+        // if that changes in the future, we'll need to pass the InstanceFeatures in here somehow and gate the conversion
+        if needsColorSpaceConversion || type == .heic {
+            let context = CIContext()
+            let colorSpace = needsColorSpaceConversion || image.colorSpace != nil ? CGColorSpace(name: CGColorSpace.sRGB)! : image.colorSpace!
+            if type == .png {
+                data = context.pngRepresentation(of: image, format: .ARGB8, colorSpace: colorSpace)!
+            } else {
+                data = context.jpegRepresentation(of: image, colorSpace: colorSpace)!
+                type = .jpeg
+            }
+        }
+        
+        return (data, type)
+    }
+    
     private static func exportVideoData(session: AVAssetExportSession, completion: @escaping (Result<(Data, UTType), Error>) -> Void) {
         session.outputFileType = .mp4
         session.outputURL = FileManager.default.temporaryDirectory.appendingPathComponent("exported_video_\(UUID())").appendingPathExtension("mp4")
@@ -172,7 +184,7 @@ enum CompositionAttachmentData {
 }
 
 extension PHAsset {
-    var attachmentType: CompositionAttachmentData.AttachmentType? {
+    var attachmentType: AttachmentData.AttachmentType? {
         switch self.mediaType {
         case .image:
             return .image
@@ -184,7 +196,7 @@ extension PHAsset {
     }
 }
 
-extension CompositionAttachmentData: Codable {
+extension AttachmentData: Codable {
     func encode(to encoder: Encoder) throws {
         var container = encoder.container(keyedBy: CodingKeys.self)
         
@@ -192,17 +204,18 @@ extension CompositionAttachmentData: Codable {
         case let .asset(asset):
             try container.encode("asset", forKey: .type)
             try container.encode(asset.localIdentifier, forKey: .assetIdentifier)
-        case let .image(image):
+        case let .image(originalData, originalType):
             try container.encode("image", forKey: .type)
-            try container.encode(image.pngData()!, forKey: .imageData)
+            try container.encode(originalType, forKey: .imageType)
+            try container.encode(originalData, forKey: .imageData)
         case .video(_):
-            throw EncodingError.invalidValue(self, EncodingError.Context(codingPath: [], debugDescription: "video CompositionAttachments cannot be encoded"))
+            throw EncodingError.invalidValue(self, EncodingError.Context(codingPath: encoder.codingPath, debugDescription: "video CompositionAttachments cannot be encoded"))
         case let .drawing(drawing):
             try container.encode("drawing", forKey: .type)
             let drawingData = drawing.dataRepresentation()
             try container.encode(drawingData, forKey: .drawing)
         case .gif(_):
-            throw EncodingError.invalidValue(self, EncodingError.Context(codingPath: [], debugDescription: "gif CompositionAttachments cannot be encoded"))
+            throw EncodingError.invalidValue(self, EncodingError.Context(codingPath: encoder.codingPath, debugDescription: "gif CompositionAttachments cannot be encoded"))
         }
     }
     
@@ -217,10 +230,16 @@ extension CompositionAttachmentData: Codable {
             }
             self = .asset(asset)
         case "image":
-            guard let image = UIImage(data: try container.decode(Data.self, forKey: .imageData)) else {
-                throw DecodingError.dataCorruptedError(forKey: .imageData, in: container, debugDescription: "Could not decode UIImage from image data")
+            let data = try container.decode(Data.self, forKey: .imageData)
+            if let type = try container.decodeIfPresent(UTType.self, forKey: .imageType) {
+                self = .image(data, originalType: type)
+            } else {
+                guard let image = UIImage(data: data) else {
+                    throw DecodingError.dataCorruptedError(forKey: .imageData, in: container, debugDescription: "CompositionAttachment data could not be decoded into UIImage")
+                }
+                let jpegData = image.jpegData(compressionQuality: 1)!
+                self = .image(jpegData, originalType: .jpeg)
             }
-            self = .image(image)
         case "drawing":
             let drawingData = try container.decode(Data.self, forKey: .drawing)
             let drawing = try PKDrawing(data: drawingData)
@@ -233,6 +252,7 @@ extension CompositionAttachmentData: Codable {
     enum CodingKeys: CodingKey {
         case type
         case imageData
+        case imageType
         /// The local identifier of the PHAsset for this attachment
         case assetIdentifier
         /// The PKDrawing object for this attachment.
@@ -240,13 +260,13 @@ extension CompositionAttachmentData: Codable {
     }
 }
 
-extension CompositionAttachmentData: Equatable {
-    static func ==(lhs: CompositionAttachmentData, rhs: CompositionAttachmentData) -> Bool {
+extension AttachmentData: Equatable {
+    static func ==(lhs: AttachmentData, rhs: AttachmentData) -> Bool {
         switch (lhs, rhs) {
         case let (.asset(a), .asset(b)):
             return a.localIdentifier == b.localIdentifier
-        case let (.image(a), .image(b)):
-            return a == b
+        case let (.image(a, originalType: aType), .image(b, originalType: bType)):
+            return a == b && aType == bType
         case let (.video(a), .video(b)):
             return a == b
         case let (.drawing(a), .drawing(b)):

Packages/ComposeUI/Sources/ComposeUI/Model/DismissMode.swift

@@ -0,0 +1,12 @@
+//
+//  DismissMode.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/7/23.
+//
+
+import Foundation
+
+public enum DismissMode {
+    case cancel, post
+}

Packages/ComposeUI/Sources/ComposeUI/Model/StatusFormat.swift

@@ -1,6 +1,6 @@
 //
 //  StatusFormat.swift
-//  Tusker
+//  ComposeUI
 //
 //  Created by Shadowfacts on 1/12/19.
 //  Copyright © 2019 Shadowfacts. All rights reserved.
@@ -12,8 +12,8 @@ import Pachyderm
 enum StatusFormat: Int, CaseIterable {
     case bold, italics, strikethrough, code
     
-    var insertionResult: FormatInsertionResult? {
-        switch Preferences.shared.statusContentType {
+    func insertionResult(for contentType: StatusContentType) -> FormatInsertionResult? {
+        switch contentType {
         case .plain:
             return nil
         case .markdown:
@@ -60,7 +60,7 @@ enum StatusFormat: Int, CaseIterable {
 
 typealias FormatInsertionResult = (prefix: String, suffix: String, insertionPoint: Int)
 
-protocol FormatType {
+fileprivate protocol FormatType {
     static func format(_ format: StatusFormat) -> FormatInsertionResult
 }
 

Packages/ComposeUI/Sources/ComposeUI/OptionalObservedObject.swift

@@ -0,0 +1,33 @@
+//
+//  OptionalObservedObject.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 4/15/23.
+//
+
+import SwiftUI
+import Combine
+
+@propertyWrapper
+struct OptionalObservedObject<T: ObservableObject>: DynamicProperty {
+    private class Republisher: ObservableObject {
+        var cancellable: AnyCancellable?
+        var wrapped: T? {
+            didSet {
+                cancellable?.cancel()
+                cancellable = wrapped?.objectWillChange
+                    .receive(on: RunLoop.main)
+                    .sink { [unowned self] _ in
+                        self.objectWillChange.send()
+                    }
+            }
+        }
+    }
+    
+    @StateObject private var republisher = Republisher()
+    var wrappedValue: T?
+    
+    func update() {
+        republisher.wrapped = wrappedValue
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/PKDrawing+Render.swift

@@ -0,0 +1,33 @@
+//
+//  PKDrawing+Render.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 5/9/20.
+//  Copyright © 2020 Shadowfacts. All rights reserved.
+//
+
+import UIKit
+import PencilKit
+
+extension PKDrawing {
+    
+    func imageInLightMode(from rect: CGRect, scale: CGFloat = UIScreen.main.scale) -> UIImage {
+        let lightTraitCollection = UITraitCollection(userInterfaceStyle: .light)
+        var drawingImage: UIImage!
+        lightTraitCollection.performAsCurrent {
+            drawingImage = self.image(from: rect, scale: scale)
+        }
+        
+        let imageRect = CGRect(origin: .zero, size: rect.size)
+        let format = UIGraphicsImageRendererFormat()
+        format.opaque = false
+        format.scale = scale
+        let renderer = UIGraphicsImageRenderer(size: rect.size, format: format)
+        return renderer.image { (context) in
+            UIColor.white.setFill()
+            context.fill(imageRect)
+            drawingImage.draw(in: imageRect)
+        }
+    }
+    
+}

Packages/ComposeUI/Sources/ComposeUI/TestView.swift

@@ -0,0 +1,36 @@
+//
+//  File.swift
+//  
+//
+//  Created by Shadowfacts on 4/22/23.
+//
+
+import SwiftUI
+
+struct TestView: View {
+    @State var manager = DraftsPersistentContainer()
+    
+    var body: some View {
+        VStack {
+            Button("Add") {
+                let entity = TestEntity(context: manager.viewContext)
+                entity.id = UUID()
+                try! manager.viewContext.save()
+            }
+            InnerView()
+                .environment(\.managedObjectContext, manager.viewContext)
+        }
+    }
+}
+
+struct InnerView: View {
+    @FetchRequest(sortDescriptors: []) var results: FetchedResults<TestEntity>
+    
+    var body: some View {
+        List {
+            ForEach(results) { result in
+                Text(result.id?.uuidString ?? "<nil>")
+            }
+        }
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/TextViewCaretScrolling.swift

@@ -1,5 +1,5 @@
 //
-//  ComposeTextViewCaretScrolling.swift
+//  TextViewCaretScrolling.swift
 //  Tusker
 //
 //  Created by Shadowfacts on 11/11/20.
@@ -8,11 +8,11 @@
 
 import UIKit
 
-protocol ComposeTextViewCaretScrolling: AnyObject {
+protocol TextViewCaretScrolling: AnyObject {
     var caretScrollPositionAnimator: UIViewPropertyAnimator? { get set }
 }
 
-extension ComposeTextViewCaretScrolling {
+extension TextViewCaretScrolling {
     func ensureCursorVisible(textView: UITextView) {
         guard textView.isFirstResponder,
               let range = textView.selectedTextRange,

Packages/ComposeUI/Sources/ComposeUI/UITextInput+Autocomplete.swift

@@ -0,0 +1,183 @@
+//
+//  UITextInput+Autocomplete.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/5/23.
+//
+
+import UIKit
+import SwiftUI
+
+extension UITextInput {
+    func autocomplete(with string: String, permittedModes: AutocompleteModes, autocompleteState: inout AutocompleteState?) {
+        guard let selectedTextRange,
+              let wholeDocumentRange = self.textRange(from: self.beginningOfDocument, to: self.endOfDocument),
+              let text = self.text(in: wholeDocumentRange),
+              let (lastWordStartIndex, _) = findAutocompleteLastWord() else {
+            return
+        }
+        
+        let distanceToEnd = self.offset(from: selectedTextRange.start, to: self.endOfDocument)
+        
+        let selectedRangeStartUTF16 = self.offset(from: self.beginningOfDocument, to: selectedTextRange.start)
+        let characterBeforeCursorIndex = text.utf16.index(text.startIndex, offsetBy: selectedRangeStartUTF16)
+        
+        let insertSpace: Bool
+        if distanceToEnd > 0 {
+            let charAfterCursor = text[characterBeforeCursorIndex]
+            insertSpace = charAfterCursor != " " && charAfterCursor != "\n"
+        } else {
+            insertSpace = true
+        }
+        let string = insertSpace ? string + " " : string
+        
+        let startPosition = self.position(from: self.beginningOfDocument, offset: text.utf16.distance(from: text.startIndex, to: lastWordStartIndex))!
+        let lastWordRange = self.textRange(from: startPosition, to: selectedTextRange.start)!
+        replace(lastWordRange, withText: string)
+        
+        autocompleteState = updateAutocompleteState(permittedModes: permittedModes)
+        
+        // keep the cursor at the same position in the text, immediately after what was inserted
+        // if we inserted a space, move the cursor 1 farther so it's immediately after the pre-existing space
+        let insertSpaceOffset = insertSpace ? 0 : 1
+        let newCursorPosition = self.position(from: self.endOfDocument, offset: -distanceToEnd + insertSpaceOffset)!
+        self.selectedTextRange = self.textRange(from: newCursorPosition, to: newCursorPosition)
+    }
+    
+    func updateAutocompleteState(permittedModes: AutocompleteModes) -> AutocompleteState? {
+        guard let selectedTextRange,
+            let wholeDocumentRange = self.textRange(from: self.beginningOfDocument, to: self.endOfDocument),
+              let text = self.text(in: wholeDocumentRange),
+              !text.isEmpty,
+              let (lastWordStartIndex, foundFirstAtSign) = findAutocompleteLastWord() else {
+            return nil
+        }
+        
+        let triggerChars = permittedModes.triggerChars
+        
+        if lastWordStartIndex > text.startIndex {
+            // if the character before the "word" beginning is a valid part of a "word",
+            // we aren't able to autocomplete
+            let c = text[text.index(before: lastWordStartIndex)]
+            if isPermittedForAutocomplete(c) || triggerChars.contains(c) {
+                return nil
+            }
+        }
+        
+        let characterBeforeCursorIndex = text.utf16.index(text.startIndex, offsetBy: self.offset(from: self.beginningOfDocument, to: selectedTextRange.start))
+        
+        if lastWordStartIndex >= text.startIndex {
+            let lastWord = text[lastWordStartIndex..<characterBeforeCursorIndex]
+            let exceptFirst = lastWord[lastWord.index(after: lastWord.startIndex)...]
+            
+            // periods are only allowed in mentions in the domain part
+            if lastWord.contains(".") {
+                if lastWord.first == "@" && foundFirstAtSign && permittedModes.contains(.mentions) {
+                    return .mention(String(exceptFirst))
+                } else {
+                    return nil
+                }
+            }
+            
+            switch lastWord.first {
+            case "@" where permittedModes.contains(.mentions):
+                return .mention(String(exceptFirst))
+            case ":" where permittedModes.contains(.emojis):
+                return .emoji(String(exceptFirst))
+            case "#" where permittedModes.contains(.hashtags):
+                return .hashtag(String(exceptFirst))
+            default:
+                return nil
+            }
+        } else {
+            return nil
+        }
+    }
+    
+    private func findAutocompleteLastWord() -> (index: String.Index, foundFirstAtSign: Bool)? {
+        guard (self as? UIView)?.isFirstResponder == true,
+              let selectedTextRange,
+              selectedTextRange.isEmpty,
+              let wholeDocumentRange = self.textRange(from: self.beginningOfDocument, to: self.endOfDocument),
+              let text = self.text(in: wholeDocumentRange),
+              !text.isEmpty else {
+            return nil
+        }
+        
+        let selectedRangeStartUTF16 = self.offset(from: self.beginningOfDocument, to: selectedTextRange.start)
+        let cursorIndex = text.utf16.index(text.startIndex, offsetBy: selectedRangeStartUTF16)
+        
+        guard cursorIndex != text.startIndex else {
+            return nil
+        }
+        
+        var lastWordStartIndex = text.index(before: cursorIndex)
+        var foundFirstAtSign = false
+        while true {
+            let c = text[lastWordStartIndex]
+            
+            if !isPermittedForAutocomplete(c) {
+                if foundFirstAtSign {
+                    if c != "@" {
+                        // move the index forward by 1, so that the first char of the substring is the 1st @ instead of whatever comes before it
+                        lastWordStartIndex = text.index(after: lastWordStartIndex)
+                    }
+                    break
+                } else {
+                    if c == "@" {
+                        foundFirstAtSign = true
+                    } else if c != "." {
+                        // periods are allowed for domain names in mentions
+                        break
+                    }
+                }
+            }
+            
+            guard lastWordStartIndex > text.startIndex else {
+                break
+            }
+            
+            lastWordStartIndex = text.index(before: lastWordStartIndex)
+        }
+        
+        return (lastWordStartIndex, foundFirstAtSign)
+    }
+}
+
+enum AutocompleteState: Equatable {
+    case mention(String)
+    case emoji(String)
+    case hashtag(String)
+}
+
+struct AutocompleteModes: OptionSet {
+    static let mentions = AutocompleteModes(rawValue: 1 << 0)
+    static let hashtags = AutocompleteModes(rawValue: 1 << 2)
+    static let emojis   = AutocompleteModes(rawValue: 1 << 3)
+    
+    static let all: AutocompleteModes = [
+        .mentions,
+        .hashtags,
+        .emojis,
+    ]
+    
+    let rawValue: Int
+    
+    var triggerChars: [Character] {
+        var chars: [Character] = []
+        if contains(.mentions) {
+            chars.append("@")
+        }
+        if contains(.hashtags) {
+            chars.append("#")
+        }
+        if contains(.emojis) {
+            chars.append(":")
+        }
+        return chars
+    }
+}
+
+private func isPermittedForAutocomplete(_ c: Character) -> Bool {
+    return (c >= "a" && c <= "z") || (c >= "A" && c <= "Z") || (c >= "0" && c <= "9") || c == "_"
+}

Packages/ComposeUI/Sources/ComposeUI/View+ForwardsCompat.swift

@@ -0,0 +1,20 @@
+//
+//  View+ForwardsCompat.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/25/23.
+//
+
+import SwiftUI
+
+extension View {
+    @available(iOS, obsoleted: 16.0)
+    @ViewBuilder
+    func scrollDisabledIfAvailable(_ disabled: Bool) -> some View {
+        if #available(iOS 16.0, *) {
+            self.scrollDisabled(disabled)
+        } else {
+            self
+        }
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/ViewController.swift

@@ -0,0 +1,29 @@
+//
+//  ViewController.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/4/23.
+//
+
+import SwiftUI
+import Combine
+
+public protocol ViewController: ObservableObject {
+    associatedtype ContentView: View
+    
+    @ViewBuilder
+    var view: ContentView { get }
+}
+
+public struct ControllerView<Controller: ViewController>: View {
+    @StateObject private var controller: Controller
+    
+    public init(controller: @escaping () -> Controller) {
+        self._controller = StateObject(wrappedValue: controller())
+    }
+    
+    public var body: some View {
+        controller.view
+            .environmentObject(controller)
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/Views/AttachmentDescriptionTextView.swift

@@ -0,0 +1,139 @@
+//
+//  AttachmentDescriptionTextView.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/12/23.
+//
+
+import SwiftUI
+
+private var placeholder: some View {
+    Text("Describe for the visually impaired…")
+}
+
+struct InlineAttachmentDescriptionView: View {
+    @ObservedObject private var attachment: DraftAttachment
+    private let minHeight: CGFloat
+    
+    @State private var height: CGFloat?
+    
+    init(attachment: DraftAttachment, minHeight: CGFloat) {
+        self.attachment = attachment
+        self.minHeight = minHeight
+    }
+    
+    var body: some View {
+        ZStack(alignment: .topLeading) {
+            if attachment.attachmentDescription.isEmpty {
+                placeholder
+                    .font(.body)
+                    .foregroundColor(.secondary)
+                    .offset(x: 4, y: 8)
+            }
+            
+            WrappedTextView(
+                text: $attachment.attachmentDescription,
+                backgroundColor: .clear,
+                textDidChange: self.textDidChange
+            )
+            .frame(height: height ?? minHeight)
+        }
+    }
+    
+    private func textDidChange(_ textView: UITextView) {
+        height = max(minHeight, textView.contentSize.height)
+    }
+}
+
+struct FocusedAttachmentDescriptionView: View {
+    @ObservedObject var attachment: DraftAttachment
+    
+    var body: some View {
+        ZStack(alignment: .topLeading) {
+            WrappedTextView(
+                text: $attachment.attachmentDescription,
+                backgroundColor: .secondarySystemBackground,
+                textDidChange: nil
+            )
+            .edgesIgnoringSafeArea([.bottom, .leading, .trailing])
+            
+            if attachment.attachmentDescription.isEmpty {
+                placeholder
+                    .font(.body)
+                    .foregroundColor(.secondary)
+                    .offset(x: 4, y: 8)
+                    .allowsHitTesting(false)
+            }
+        }
+    }
+}
+
+private struct WrappedTextView: UIViewRepresentable {
+    typealias UIViewType = UITextView
+    
+    @Binding var text: String
+    let backgroundColor: UIColor
+    let textDidChange: (((UITextView) -> Void))?
+    
+    @Environment(\.isEnabled) private var isEnabled
+    
+    func makeUIView(context: Context) -> UITextView {
+        let view = UITextView()
+        view.delegate = context.coordinator
+        view.backgroundColor = backgroundColor
+        view.font = .preferredFont(forTextStyle: .body)
+        view.adjustsFontForContentSizeCategory = true
+        view.textContainer.lineBreakMode = .byWordWrapping
+        return view
+    }
+    
+    func updateUIView(_ uiView: UITextView, context: Context) {
+        uiView.text = text
+        uiView.isEditable = isEnabled
+        context.coordinator.textView = uiView
+        context.coordinator.text = $text
+        context.coordinator.didChange = textDidChange
+        if let textDidChange {
+            // wait until the next runloop iteration so that SwiftUI view updates have finished and
+            // the text view knows its new content size
+            DispatchQueue.main.async {
+                textDidChange(uiView)
+            }
+        }
+    }
+    
+    func makeCoordinator() -> Coordinator {
+        Coordinator(text: $text, didChange: textDidChange)
+    }
+    
+    class Coordinator: NSObject, UITextViewDelegate, TextViewCaretScrolling {
+        weak var textView: UITextView?
+        var text: Binding<String>
+        var didChange: ((UITextView) -> Void)?
+        var caretScrollPositionAnimator: UIViewPropertyAnimator?
+        
+        init(text: Binding<String>, didChange: ((UITextView) -> Void)?) {
+            self.text = text
+            self.didChange = didChange
+            
+            super.init()
+            
+            NotificationCenter.default.addObserver(self, selector: #selector(keyboardDidShow), name: UIResponder.keyboardDidShowNotification, object: nil)
+        }
+        
+        @objc private func keyboardDidShow() {
+            guard let textView,
+                  textView.isFirstResponder else {
+                return
+            }
+            ensureCursorVisible(textView: textView)
+        }
+        
+        func textViewDidChange(_ textView: UITextView) {
+            text.wrappedValue = textView.text
+            didChange?(textView)
+            
+            ensureCursorVisible(textView: textView)
+        }
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/Views/CurrentAccountView.swift

@@ -0,0 +1,45 @@
+//
+//  CurrentAccountView.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/4/23.
+//
+
+import SwiftUI
+import Pachyderm
+import TuskerComponents
+
+struct CurrentAccountView: View {
+    let account: (any AccountProtocol)?
+    @EnvironmentObject private var controller: ComposeController
+    
+    var body: some View {
+        controller.currentAccountContainerView(AnyView(currentAccount))
+    }
+    
+    private var currentAccount: some View {
+        HStack(alignment: .top) {
+            AvatarImageView(
+                url: account?.avatar,
+                size: 50,
+                style: controller.config.avatarStyle,
+                fetchAvatar: controller.fetchAvatar
+            )
+            .accessibilityHidden(true)
+            
+            if let account {
+                VStack(alignment: .leading) {
+                    controller.displayNameLabel(account, .title2, 24)
+                        .lineLimit(1)
+                    
+                    Text(verbatim: "@\(account.acct)")
+                        .font(.body.weight(.light))
+                        .foregroundColor(.secondary)
+                        .lineLimit(1)
+                }
+            }
+            
+            Spacer()
+        }
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/Views/EmojiTextField.swift

@@ -0,0 +1,141 @@
+//
+//  EmojiTextField.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/5/23.
+//
+
+import SwiftUI
+
+struct EmojiTextField: UIViewRepresentable {
+    typealias UIViewType = UITextField
+    
+    @EnvironmentObject private var controller: ComposeController
+    @Environment(\.colorScheme) private var colorScheme
+    
+    @Binding var text: String
+    let placeholder: String
+    let maxLength: Int?
+    let becomeFirstResponder: Binding<Bool>?
+    let focusNextView: Binding<Bool>?
+    
+    init(text: Binding<String>, placeholder: String, maxLength: Int?, becomeFirstResponder: Binding<Bool>? = nil, focusNextView: Binding<Bool>? = nil) {
+        self._text = text
+        self.placeholder = placeholder
+        self.maxLength = maxLength
+        self.becomeFirstResponder = becomeFirstResponder
+        self.focusNextView = focusNextView
+    }
+    
+    func makeUIView(context: Context) -> UITextField {
+        let view = UITextField()
+        view.borderStyle = .roundedRect
+        view.font = .preferredFont(forTextStyle: .body)
+        view.adjustsFontForContentSizeCategory = true
+        view.attributedPlaceholder = NSAttributedString(string: placeholder, attributes: [
+            .foregroundColor: UIColor.secondaryLabel,
+        ])
+        
+        context.coordinator.textField = view
+        
+        view.delegate = context.coordinator
+        view.addTarget(context.coordinator, action: #selector(Coordinator.didChange(_:)), for: .editingChanged)
+        view.addTarget(context.coordinator, action: #selector(Coordinator.returnKeyPressed), for: .primaryActionTriggered)
+        
+        // otherwise when the text gets too wide it starts expanding the ComposeView
+        view.setContentCompressionResistancePriority(.defaultLow, for: .horizontal)
+        
+        return view
+    }
+    
+    func updateUIView(_ uiView: UITextField, context: Context) {
+        if text != uiView.text {
+            uiView.text = text
+        }
+        
+        context.coordinator.text = $text
+        context.coordinator.maxLength = maxLength
+        context.coordinator.focusNextView = focusNextView
+        
+        uiView.backgroundColor = colorScheme == .dark ? UIColor(controller.config.fillColor) : .secondarySystemBackground
+        
+        if becomeFirstResponder?.wrappedValue == true {
+            DispatchQueue.main.async {
+                uiView.becomeFirstResponder()
+                becomeFirstResponder!.wrappedValue = false
+            }
+        }
+    }
+    
+    func makeCoordinator() -> Coordinator {
+        Coordinator(controller: controller, text: $text, focusNextView: focusNextView)
+    }
+    
+    class Coordinator: NSObject, UITextFieldDelegate, ComposeInput {
+        let controller: ComposeController
+        var text: Binding<String>
+        var focusNextView: Binding<Bool>?
+        var maxLength: Int?
+        
+        @Published var autocompleteState: AutocompleteState?
+        var autocompleteStatePublisher: Published<AutocompleteState?>.Publisher { $autocompleteState }
+        
+        weak var textField: UITextField?
+        
+        init(controller: ComposeController, text: Binding<String>, focusNextView: Binding<Bool>?, maxLength: Int? = nil) {
+            self.controller = controller
+            self.text = text
+            self.focusNextView = focusNextView
+            self.maxLength = maxLength
+        }
+        
+        @objc func didChange(_ textField: UITextField) {
+            text.wrappedValue = textField.text ?? ""
+        }
+        
+        @objc func returnKeyPressed() {
+            focusNextView?.wrappedValue = true
+        }
+        
+        func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
+            if let maxLength {
+                return ((textField.text ?? "") as NSString).replacingCharacters(in: range, with: string).count <= maxLength
+            } else {
+                return true
+            }
+        }
+        
+        func textFieldDidBeginEditing(_ textField: UITextField) {
+            controller.currentInput = self
+            autocompleteState = textField.updateAutocompleteState(permittedModes: .emojis)
+        }
+        
+        func textFieldDidEndEditing(_ textField: UITextField) {
+            controller.currentInput = nil
+            autocompleteState = textField.updateAutocompleteState(permittedModes: .emojis)
+        }
+        
+        func textFieldDidChangeSelection(_ textField: UITextField) {
+            autocompleteState = textField.updateAutocompleteState(permittedModes: .emojis)
+        }
+        
+        // MARK: ComposeInput
+        
+        var toolbarElements: [ToolbarElement] { [.emojiPicker] }
+        
+        var textInputMode: UITextInputMode? {
+            textField?.textInputMode
+        }
+        
+        func applyFormat(_ format: StatusFormat) {
+        }
+        
+        func beginAutocompletingEmoji() {
+            textField?.insertText(":")
+        }
+        
+        func autocomplete(with string: String) {
+            textField?.autocomplete(with: string, permittedModes: .emojis, autocompleteState: &autocompleteState)
+        }
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/Views/HeaderView.swift

@@ -0,0 +1,31 @@
+//
+//  HeaderView.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/4/23.
+//
+
+import SwiftUI
+import Pachyderm
+import InstanceFeatures
+
+struct HeaderView: View {
+    let currentAccount: (any AccountProtocol)?
+    let charsRemaining: Int
+    
+    var body: some View {
+        HStack(alignment: .top) {
+            CurrentAccountView(account: currentAccount)
+                .accessibilitySortPriority(1)
+            
+            Spacer()
+            
+            Text(verbatim: charsRemaining.description)
+                .foregroundColor(charsRemaining < 0 ? .red : .secondary)
+                .font(Font.body.monospacedDigit())
+                .accessibility(label: Text(charsRemaining < 0 ? "\(-charsRemaining) characters too many" : "\(charsRemaining) characters remaining"))
+                // this should come first, so VO users can back to it from the main compose text view
+                .accessibilitySortPriority(0)
+        }.frame(height: 50)
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/Views/LanguagePicker.swift

@@ -0,0 +1,201 @@
+//
+//  LanguagePicker.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 5/4/23.
+//
+
+import SwiftUI
+
+@available(iOS 16.0, *)
+struct LanguagePicker: View {
+    @Binding var draftLanguage: String?
+    @Binding var hasChangedSelection: Bool
+    @State private var isShowingSheet = false
+    
+    private var codeFromDraft: Locale.LanguageCode? {
+        draftLanguage.map(Locale.LanguageCode.init(_:))
+    }
+    
+    private var codeFromActiveInputMode: Locale.LanguageCode? {
+        UITextInputMode.activeInputModes.first.flatMap(Self.codeFromInputMode(_:))
+    }
+    
+    static func codeFromInputMode(_ mode: UITextInputMode) -> Locale.LanguageCode? {
+        guard let bcp47Lang = mode.primaryLanguage else {
+            return nil
+        }
+        var maybeIso639Code = bcp47Lang[..<bcp47Lang.index(bcp47Lang.startIndex, offsetBy: 3)]
+        if maybeIso639Code.last == "-" {
+            maybeIso639Code = maybeIso639Code[..<maybeIso639Code.index(before: maybeIso639Code.endIndex)]
+        }
+        let code = Locale.LanguageCode(String(maybeIso639Code))
+        if code.isISOLanguage {
+            return code
+        } else {
+            return nil
+        }
+    }
+    
+    private var codeFromPreferredLanguages: Locale.LanguageCode? {
+        if let identifier = Locale.preferredLanguages.first {
+            let code = Locale.LanguageCode(identifier)
+            if code.isISOLanguage {
+                return code
+            } else {
+                return nil
+            }
+        } else {
+            return nil
+        }
+    }
+    
+    private var languageCode: Binding<Locale.LanguageCode> {
+        Binding {
+            return codeFromDraft ?? codeFromActiveInputMode ?? codeFromPreferredLanguages ?? .english
+        } set: { newValue in
+            draftLanguage = newValue.identifier
+        }
+    }
+    
+    var body: some View {
+        Button {
+            isShowingSheet = true
+        } label: {
+            Text((languageCode.wrappedValue.identifier(.alpha2) ?? languageCode.wrappedValue.identifier).uppercased())
+        }
+        .accessibilityLabel("Post Language")
+        .sheet(isPresented: $isShowingSheet) {
+            NavigationStack {
+                LanguagePickerList(languageCode: languageCode, hasChangedSelection: $hasChangedSelection, isPresented: $isShowingSheet)
+            }
+            .presentationDetents([.large, .medium])
+        }
+    }
+}
+
+@available(iOS 16.0, *)
+private struct LanguagePickerList: View {
+    @Binding var languageCode: Locale.LanguageCode
+    @Binding var hasChangedSelection: Bool
+    @Binding var isPresented: Bool
+    @Environment(\.composeUIConfig.groupedBackgroundColor) private var groupedBackgroundColor
+    @Environment(\.composeUIConfig.groupedCellBackgroundColor) private var groupedCellBackgroundColor
+    @State private var recentLangs: [Lang] = []
+    @State private var langs: [Lang] = []
+    @State private var filteredLangs: [Lang]?
+    @State private var query = ""
+    
+    private var defaults: UserDefaults {
+        UserDefaults(suiteName: "group.space.vaccor.Tusker") ?? .standard
+    }
+    
+    private var recentIdentifiers: [String] {
+        get {
+            defaults.object(forKey: "LanguagePickerRecents") as? [String] ?? []
+        }
+        nonmutating set {
+            defaults.set(newValue, forKey: "LanguagePickerRecents")
+        }
+    }
+    
+    var body: some View {
+        List {
+            Section {
+                ForEach(recentLangs) { lang in
+                    button(for: lang)
+                }
+                .listRowBackground(groupedCellBackgroundColor)
+            } header: {
+                Text("Recently Used")
+            }
+            
+            Section {
+                ForEach(filteredLangs ?? langs) { lang in
+                    button(for: lang)
+                }
+                .listRowBackground(groupedCellBackgroundColor)
+            } header: {
+                Text("All Languages")
+            }
+        }
+        .listStyle(.insetGrouped)
+        .scrollContentBackground(.hidden)
+        .background(groupedBackgroundColor.edgesIgnoringSafeArea(.all))
+        .searchable(text: $query)
+        .scrollDismissesKeyboard(.interactively)
+        .navigationTitle("Post Language")
+        .navigationBarTitleDisplayMode(.inline)
+        .toolbar {
+            ToolbarItem(placement: .confirmationAction) {
+                Button("Done") {
+                    isPresented = false
+                }
+            }
+        }
+        .onAppear {
+            // make sure recents always contains the currently selected lang
+            let recents = addRecentLang(languageCode)
+            recentLangs = recents
+                .map { Lang(code: .init($0)) }
+                .sorted { $0.name < $1.name }
+            
+            langs = Locale.LanguageCode.isoLanguageCodes
+                .map { Lang(code: $0) }
+                .sorted { $0.name < $1.name }
+        }
+        .onChange(of: query) { newValue in
+            if newValue.isEmpty {
+                filteredLangs = nil
+            } else {
+                filteredLangs = langs.filter {
+                    $0.name.localizedCaseInsensitiveContains(newValue) || $0.code.identifier.localizedCaseInsensitiveContains(newValue)
+                }
+            }
+        }
+    }
+    
+    @discardableResult
+    private func addRecentLang(_ code: Locale.LanguageCode) -> [String] {
+        var recents = recentIdentifiers
+        if !recents.contains(languageCode.identifier) {
+            recents.insert(languageCode.identifier, at: 0)
+            if recents.count > 5 {
+                recents = Array(recents[..<5])
+            }
+            recentIdentifiers = recents
+        }
+        return recents
+    }
+    
+    private func button(for lang: Lang) -> some View {
+        Button {
+            languageCode = lang.code
+            hasChangedSelection = true
+            isPresented = false
+            addRecentLang(lang.code)
+        } label: {
+            HStack {
+                Text(lang.name)
+                Spacer()
+                if lang.code == languageCode {
+                    Image(systemName: "checkmark")
+                }
+            }
+        }
+    }
+    
+    struct Lang: Identifiable {
+        let code: Locale.LanguageCode
+        let name: String
+        
+        var id: String {
+            code.identifier
+        }
+        
+        init(code: Locale.LanguageCode) {
+            self.code = code
+            self.name = Locale.current.localizedString(forLanguageCode: code.identifier) ?? code.identifier
+        }
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/Views/MainTextView.swift

@@ -0,0 +1,309 @@
+//
+//  MainTextView.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/6/23.
+//
+
+import SwiftUI
+
+struct MainTextView: View {
+    @EnvironmentObject private var controller: ComposeController
+    @EnvironmentObject private var draft: Draft
+    @Environment(\.colorScheme) private var colorScheme
+    @ScaledMetric private var fontSize = 20
+    
+    @State private var hasFirstAppeared = false
+    @State private var height: CGFloat?
+    @State private var updateSelection: ((UITextView) -> Void)?
+    private let minHeight: CGFloat = 150
+    private var effectiveHeight: CGFloat { height ?? minHeight }
+    
+    var config: ComposeUIConfig {
+        controller.config
+    }
+    
+    var body: some View {
+        ZStack(alignment: .topLeading) {
+            colorScheme == .dark ? config.fillColor : Color(uiColor: .secondarySystemBackground)
+            
+            if draft.text.isEmpty {
+                ControllerView(controller: { PlaceholderController() })
+                    .font(.system(size: fontSize))
+                    .foregroundColor(.secondary)
+                    .offset(x: 4, y: 8)
+                    .accessibilityHidden(true)
+            }
+            
+            MainWrappedTextViewRepresentable(text: $draft.text, becomeFirstResponder: $controller.mainComposeTextViewBecomeFirstResponder, updateSelection: $updateSelection, textDidChange: textDidChange)
+        }
+        .frame(height: effectiveHeight)
+        .onAppear(perform: becomeFirstResponderOnFirstAppearance)
+    }
+    
+    private func becomeFirstResponderOnFirstAppearance() {
+        if !hasFirstAppeared {
+            hasFirstAppeared = true
+            controller.mainComposeTextViewBecomeFirstResponder = true
+            if config.textSelectionStartsAtBeginning {
+                updateSelection = { textView in
+                    textView.selectedTextRange = textView.textRange(from: textView.beginningOfDocument, to: textView.beginningOfDocument)
+                }
+            }
+        }
+    }
+    
+    private func textDidChange(textView: UITextView) {
+        height = max(textView.contentSize.height, minHeight)
+    }
+}
+
+fileprivate struct MainWrappedTextViewRepresentable: UIViewRepresentable {
+    typealias UIViewType = UITextView
+    
+    @Binding var text: String
+    @Binding var becomeFirstResponder: Bool
+    @Binding var updateSelection: ((UITextView) -> Void)?
+    let textDidChange: (UITextView) -> Void
+    
+    @EnvironmentObject private var controller: ComposeController
+    @Environment(\.isEnabled) private var isEnabled: Bool
+    
+    func makeUIView(context: Context) -> UITextView {
+        let textView = WrappedTextView(composeController: controller)
+        context.coordinator.textView = textView
+        textView.delegate = context.coordinator
+        textView.isEditable = true
+        textView.backgroundColor = .clear
+        textView.font = UIFontMetrics.default.scaledFont(for: .systemFont(ofSize: 20))
+        textView.adjustsFontForContentSizeCategory = true
+        textView.textContainer.lineBreakMode = .byWordWrapping
+        return textView
+    }
+    
+    func updateUIView(_ uiView: UITextView, context: Context) {
+        if text != uiView.text {
+            context.coordinator.skipNextSelectionChangedAutocompleteUpdate = true
+            uiView.text = text
+        }
+        
+        uiView.isEditable = isEnabled
+        uiView.keyboardType = controller.config.useTwitterKeyboard ? .twitter : .default
+        
+        context.coordinator.text = $text
+        
+        if let updateSelection {
+            updateSelection(uiView)
+            self.updateSelection = nil
+        }
+        
+        // wait until the next runloop iteration so that SwiftUI view updates have finished and
+        // the text view knows its new content size
+        DispatchQueue.main.async {
+            textDidChange(uiView)
+            
+            if becomeFirstResponder {
+                // calling becomeFirstResponder during the SwiftUI update causes a crash on iOS 13
+                uiView.becomeFirstResponder()
+                // can't update @State vars during the SwiftUI update
+                becomeFirstResponder = false
+            }
+        }
+    }
+    
+    func makeCoordinator() -> Coordinator {
+        Coordinator(controller: controller, text: $text, textDidChange: textDidChange)
+    }
+    
+    class WrappedTextView: UITextView {
+        private let formattingActions = [#selector(toggleBoldface(_:)), #selector(toggleItalics(_:))]
+        private let composeController: ComposeController
+        
+        init(composeController: ComposeController) {
+            self.composeController = composeController
+            super.init(frame: .zero, textContainer: nil)
+        }
+        
+        required init?(coder: NSCoder) {
+            fatalError()
+        }
+        
+        override func canPerformAction(_ action: Selector, withSender sender: Any?) -> Bool {
+            if formattingActions.contains(action) {
+                return composeController.config.contentType != .plain
+            }
+            return super.canPerformAction(action, withSender: sender)
+        }
+        
+        override func toggleBoldface(_ sender: Any?) {
+            (delegate as! Coordinator).applyFormat(.bold)
+        }
+        
+        override func toggleItalics(_ sender: Any?) {
+            (delegate as! Coordinator).applyFormat(.italics)
+        }
+        
+        override func validate(_ command: UICommand) {
+            super.validate(command)
+            
+            if formattingActions.contains(command.action),
+               composeController.config.contentType != .plain {
+                command.attributes.remove(.disabled)
+            }
+        }
+        
+        override func paste(_ sender: Any?) {
+            // we deliberately exclude the other CompositionAttachment readable type identifiers, because that's too overzealous with the conversion
+            // and things like URLs end up pasting as attachments
+            if UIPasteboard.general.contains(pasteboardTypes: UIImage.readableTypeIdentifiersForItemProvider) {
+                composeController.paste(itemProviders: UIPasteboard.general.itemProviders)
+            } else {
+                super.paste(sender)
+            }
+        }
+    }
+    
+    class Coordinator: NSObject, UITextViewDelegate, ComposeInput, TextViewCaretScrolling {
+        weak var textView: UITextView?
+        
+        let controller: ComposeController
+        var text: Binding<String>
+        let textDidChange: (UITextView) -> Void
+        
+        var caretScrollPositionAnimator: UIViewPropertyAnimator?
+        
+        @Published var autocompleteState: AutocompleteState?
+        var autocompleteStatePublisher: Published<AutocompleteState?>.Publisher { $autocompleteState }
+        var skipNextSelectionChangedAutocompleteUpdate = false
+        
+        init(controller: ComposeController, text: Binding<String>, textDidChange: @escaping (UITextView) -> Void) {
+            self.controller = controller
+            self.text = text
+            self.textDidChange = textDidChange
+            
+            super.init()
+            
+            NotificationCenter.default.addObserver(self, selector: #selector(keyboardDidShow), name: UIResponder.keyboardDidShowNotification, object: nil)
+        }
+        
+        @objc private func keyboardDidShow() {
+            guard let textView,
+                  textView.isFirstResponder else {
+                return
+            }
+            ensureCursorVisible(textView: textView)
+        }
+        
+        // MARK: UITextViewDelegate
+        
+        func textViewDidChange(_ textView: UITextView) {
+            text.wrappedValue = textView.text
+            textDidChange(textView)
+            
+            ensureCursorVisible(textView: textView)
+        }
+        
+        func textViewDidBeginEditing(_ textView: UITextView) {
+            controller.currentInput = self
+            updateAutocompleteState()
+        }
+        
+        func textViewDidEndEditing(_ textView: UITextView) {
+            controller.currentInput = nil
+            updateAutocompleteState()
+        }
+        
+        func textViewDidChangeSelection(_ textView: UITextView) {
+            if skipNextSelectionChangedAutocompleteUpdate {
+                skipNextSelectionChangedAutocompleteUpdate = false
+            } else {
+                updateAutocompleteState()
+            }
+        }
+        
+        func textView(_ textView: UITextView, editMenuForTextIn range: NSRange, suggestedActions: [UIMenuElement]) -> UIMenu? {
+            var actions = suggestedActions
+            if controller.config.contentType != .plain,
+               let index = suggestedActions.firstIndex(where: { ($0 as? UIMenu)?.identifier.rawValue == "com.apple.menu.format" }) {
+                if range.length > 0 {
+                    let formatMenu = suggestedActions[index] as! UIMenu
+                    let newFormatMenu = formatMenu.replacingChildren(StatusFormat.allCases.map { fmt in
+                        var image: UIImage?
+                        if let imageName = fmt.imageName {
+                            image = UIImage(systemName: imageName)
+                        }
+                        return UIAction(title: fmt.accessibilityLabel, image: image) { [weak self] _ in
+                            self?.applyFormat(fmt)
+                        }
+                    })
+                    actions[index] = newFormatMenu
+                } else {
+                    actions.remove(at: index)
+                }
+            }
+            if range.length == 0 {
+                actions.append(UIAction(title: "Insert Emoji", image: UIImage(systemName: "face.smiling"), handler: { [weak self] _ in
+                    self?.controller.shouldEmojiAutocompletionBeginExpanded = true
+                    self?.beginAutocompletingEmoji()
+                }))
+            }
+            return UIMenu(children: actions)
+        }
+        
+        // MARK: ComposeInput
+        
+        var toolbarElements: [ToolbarElement] {
+            [.emojiPicker, .formattingButtons]
+        }
+        
+        var textInputMode: UITextInputMode? {
+            textView?.textInputMode
+        }
+        
+        func autocomplete(with string: String) {
+            textView?.autocomplete(with: string, permittedModes: .all, autocompleteState: &autocompleteState)
+        }
+        
+        func applyFormat(_ format: StatusFormat) {
+            guard let textView,
+                  textView.isFirstResponder,
+                  let insertionResult = format.insertionResult(for: controller.config.contentType) else {
+                return
+            }
+            
+            let currentSelectedRange = textView.selectedRange
+            if currentSelectedRange.length == 0 {
+                textView.insertText(insertionResult.prefix + insertionResult.suffix)
+                textView.selectedRange = NSRange(location: currentSelectedRange.location + insertionResult.insertionPoint, length: 0)
+            } else {
+                let start = textView.text.utf16.index(textView.text.utf16.startIndex, offsetBy: currentSelectedRange.lowerBound)
+                let end = textView.text.utf16.index(textView.text.utf16.startIndex, offsetBy: currentSelectedRange.upperBound)
+                let selectedText = textView.text.utf16[start..<end]
+                textView.insertText(insertionResult.prefix + String(Substring(selectedText)) + insertionResult.suffix)
+                textView.selectedRange = NSRange(location: currentSelectedRange.location + insertionResult.insertionPoint, length: currentSelectedRange.length)
+            }
+        }
+        
+        func beginAutocompletingEmoji() {
+            guard let textView else {
+                return
+            }
+            var insertSpace = false
+            if let text = textView.text,
+               textView.selectedRange.upperBound > 0 {
+                let characterBeforeCursorIndex = text.utf16.index(before: text.utf16.index(text.startIndex, offsetBy: textView.selectedRange.upperBound))
+                insertSpace = !text[characterBeforeCursorIndex].isWhitespace
+            }
+            textView.insertText((insertSpace ? " " : "") + ":")
+        }
+        
+        private func updateAutocompleteState() {
+            guard let textView else {
+                autocompleteState = nil
+                return
+            }
+            autocompleteState = textView.updateAutocompleteState(permittedModes: .all)
+        }
+        
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/Views/PollOptionView.swift

@@ -0,0 +1,72 @@
+//
+//  PollOptionView.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/25/23.
+//
+
+import SwiftUI
+
+struct PollOptionView: View {
+    @EnvironmentObject private var controller: PollController
+    @EnvironmentObject private var poll: Poll
+    @ObservedObject private var option: PollOption
+    let remove: () -> Void
+    
+    init(option: PollOption, remove: @escaping () -> Void) {
+        self.option = option
+        self.remove = remove
+    }
+    
+    var body: some View {
+        HStack(spacing: 4) {
+            Checkbox(radiusFraction: poll.multiple ? 0.1 : 0.5, background: controller.parent.config.backgroundColor)
+                .animation(.default, value: poll.multiple)
+            
+            textField
+            
+            Button(action: remove) {
+                Image(systemName: "minus.circle.fill")
+            }
+            .accessibilityLabel("Remove option")
+            .buttonStyle(.plain)
+            .foregroundColor(poll.options.count == 1 ? .gray : .red)
+            .disabled(poll.options.count == 1)
+            .hoverEffect()
+        }
+    }
+    
+    private var textField: some View {
+        let index = poll.options.index(of: option)
+        let placeholder = index != NSNotFound ? "Option \(index + 1)" : ""
+        let maxLength = controller.parent.mastodonController.instanceFeatures.maxPollOptionChars
+        return EmojiTextField(text: $option.text, placeholder: placeholder, maxLength: maxLength)
+    }
+    
+    struct Checkbox: View {
+        private let radiusFraction: CGFloat
+        private let size: CGFloat = 20
+        private let innerSize: CGFloat
+        private let background: Color
+        
+        init(radiusFraction: CGFloat, background: Color) {
+            self.radiusFraction = radiusFraction
+            self.innerSize = self.size - 4
+            self.background = background
+        }
+        
+        var body: some View {
+            ZStack {
+                Rectangle()
+                    .foregroundColor(.gray)
+                    .frame(width: size, height: size)
+                    .cornerRadius(radiusFraction * size)
+                
+                Rectangle()
+                    .foregroundColor(background)
+                    .frame(width: innerSize, height: innerSize)
+                    .cornerRadius(radiusFraction * innerSize)
+            }
+        }
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/Views/ReplyStatusView.swift

@@ -1,23 +1,23 @@
 //
-//  ComposeReplyView.swift
-//  Tusker
+//  ReplyStatusView.swift
+//  ComposeUI
 //
-//  Created by Shadowfacts on 8/22/20.
-//  Copyright © 2020 Shadowfacts. All rights reserved.
+//  Created by Shadowfacts on 3/25/23.
 //
 
 import SwiftUI
+import Pachyderm
+import TuskerComponents
 
-struct ComposeReplyView: View {
-    let status: StatusMO
+struct ReplyStatusView: View {
+    let status: any StatusProtocol
     let rowTopInset: CGFloat
     let globalFrameOutsideList: CGRect
     
+    @EnvironmentObject private var controller: ComposeController
     @State private var displayNameHeight: CGFloat?
     @State private var contentHeight: CGFloat?
     
-    @ObservedObject private var preferences = Preferences.shared
-    
     private let horizSpacing: CGFloat = 8
     
     var body: some View {
@@ -27,12 +27,12 @@ struct ComposeReplyView: View {
             
             VStack(alignment: .leading, spacing: 0) {
                 HStack {
-                    AccountDisplayNameLabel(account: status.account, textStyle: .body, emojiSize: 17)
+                    controller.displayNameLabel(status.account, .body, 17)
                         .lineLimit(1)
                         .layoutPriority(1)
                     
                     Text(verbatim: "@\(status.account.acct)")
-                        .font(.system(size: 17, weight: .light))
+                        .font(.body.weight(.light))
                         .foregroundColor(.secondary)
                         .lineLimit(1)
                     
@@ -46,7 +46,7 @@ struct ComposeReplyView: View {
                         }
                 })
                 
-                ComposeReplyContentView(status: status) { newHeight in
+                controller.replyContentView(status) { newHeight in
                     // otherwise, with long in-reply-to statuses, the main content text view position seems not to update
                     // and it ends up  partially behind the header
                     DispatchQueue.main.async {
@@ -76,9 +76,12 @@ struct ComposeReplyView: View {
         // once you scroll past the in-reply-to-content, the bottom of the avatar should be pinned to the bottom of the content
         offset = min(offset, maxOffset)
 
-        return ComposeAvatarImageView(url: status.account.avatar)
-            .frame(width: 50, height: 50)
-            .cornerRadius(preferences.avatarStyle.cornerRadiusFraction * 50)
+        return AvatarImageView(
+            url: status.account.avatar,
+            size: 50,
+            style: controller.config.avatarStyle,
+            fetchAvatar: controller.fetchAvatar
+        )
         .offset(x: 0, y: offset)
         .accessibilityHidden(true)
     }
@@ -91,9 +94,3 @@ private struct DisplayNameHeightPrefKey: PreferenceKey {
         value = nextValue()
     }
 }
-
-//struct ComposeReplyView_Previews: PreviewProvider {
-//    static var previews: some View {
-//        ComposeReplyView()
-//    }
-//}

Packages/ComposeUI/Sources/ComposeUI/Views/WrappedProgressView.swift

@@ -0,0 +1,29 @@
+//
+//  WrappedProgressView.swift
+//  Tusker
+//
+//  Created by Shadowfacts on 8/30/20.
+//  Copyright © 2020 Shadowfacts. All rights reserved.
+//
+
+import SwiftUI
+
+struct WrappedProgressView: UIViewRepresentable {
+    typealias UIViewType = UIProgressView
+    
+    let value: Int
+    let total: Int
+    
+    func makeUIView(context: Context) -> UIProgressView {
+        return UIProgressView(progressViewStyle: .bar)
+    }
+    
+    func updateUIView(_ uiView: UIProgressView, context: Context) {
+        if total > 0 {
+            let progress = Float(value) / Float(total)
+            uiView.setProgress(progress, animated: true)
+        } else {
+            uiView.setProgress(0, animated: true)
+        }
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/Views/ZoomableScrollView.swift

@@ -0,0 +1,111 @@
+//
+//  ZoomableScrollView.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 4/29/23.
+//
+
+import SwiftUI
+
+@available(iOS 16.0, *)
+struct ZoomableScrollView<Content: View>: UIViewControllerRepresentable {
+    let content: Content
+    
+    init(@ViewBuilder content: () -> Content) {
+        self.content = content()
+    }
+    
+    func makeUIViewController(context: Context) -> Controller {
+        return Controller(content: content)
+    }
+
+    func updateUIViewController(_ uiViewController: Controller, context: Context) {
+        uiViewController.host.rootView = content
+    }
+    
+    class Controller: UIViewController, UIScrollViewDelegate {
+        let scrollView = UIScrollView()
+        let host: UIHostingController<Content>
+        
+        private var lastIntrinsicSize: CGSize?
+        private var contentViewTopConstraint: NSLayoutConstraint!
+        private var contentViewLeadingConstraint: NSLayoutConstraint!
+        private var hostBoundsObservation: NSKeyValueObservation?
+        
+        init(content: Content) {
+            self.host = UIHostingController(rootView: content)
+            
+            super.init(nibName: nil, bundle: nil)
+        }
+        
+        required init?(coder: NSCoder) {
+            fatalError("init(coder:) has not been implemented")
+        }
+        
+        override func viewDidLoad() {
+            super.viewDidLoad()
+            
+            scrollView.delegate = self
+            scrollView.bouncesZoom = true
+            scrollView.translatesAutoresizingMaskIntoConstraints = false
+            view.addSubview(scrollView)
+            
+            host.sizingOptions = .intrinsicContentSize
+            host.view.backgroundColor = .clear
+            host.view.translatesAutoresizingMaskIntoConstraints = false
+            addChild(host)
+            scrollView.addSubview(host.view)
+            host.didMove(toParent: self)
+            
+            contentViewLeadingConstraint = host.view.leadingAnchor.constraint(equalTo: scrollView.contentLayoutGuide.leadingAnchor)
+            contentViewTopConstraint = host.view.topAnchor.constraint(equalTo: scrollView.contentLayoutGuide.topAnchor)
+            
+            NSLayoutConstraint.activate([
+                scrollView.frameLayoutGuide.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+                scrollView.frameLayoutGuide.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+                scrollView.frameLayoutGuide.topAnchor.constraint(equalTo: view.topAnchor),
+                scrollView.frameLayoutGuide.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+                
+                contentViewLeadingConstraint,
+                contentViewTopConstraint,
+            ])
+        }
+        
+        override func viewDidLayoutSubviews() {
+            super.viewDidLayoutSubviews()
+            
+            if !host.view.intrinsicContentSize.equalTo(.zero),
+               host.view.intrinsicContentSize != lastIntrinsicSize {
+                self.lastIntrinsicSize = host.view.intrinsicContentSize
+                
+                let maxHeight = view.bounds.height - view.safeAreaInsets.top - view.safeAreaInsets.bottom
+                let maxWidth = view.bounds.width - view.safeAreaInsets.left - view.safeAreaInsets.right
+                let heightScale = maxHeight / host.view.intrinsicContentSize.height
+                let widthScale = maxWidth / host.view.intrinsicContentSize.width
+                let minScale = min(widthScale, heightScale)
+                let maxScale = minScale >= 1 ? minScale + 2 : 2
+                scrollView.minimumZoomScale = minScale
+                scrollView.maximumZoomScale = maxScale
+                scrollView.zoomScale = minScale
+            }
+            
+            centerImage()
+        }
+        
+        func viewForZooming(in scrollView: UIScrollView) -> UIView? {
+            return host.view
+        }
+        
+        func scrollViewDidZoom(_ scrollView: UIScrollView) {
+            centerImage()
+        }
+        
+        func centerImage() {
+            let yOffset = max(0, (view.bounds.size.height - host.view.bounds.height * scrollView.zoomScale) / 2)
+            contentViewTopConstraint.constant = yOffset
+
+            let xOffset = max(0, (view.bounds.size.width - host.view.bounds.width * scrollView.zoomScale) / 2)
+            contentViewLeadingConstraint.constant = xOffset
+        }
+    }
+}

Packages/ComposeUI/Tests/ComposeUITests/CharacterCounterTests.swift

@@ -1,13 +1,14 @@
 //
 //  CharacterCounterTests.swift
-//  PachydermTests
+//  ComposeUITests
 //
 //  Created by Shadowfacts on 9/29/18.
 //  Copyright © 2018 Shadowfacts. All rights reserved.
 //
 
 import XCTest
-@testable import Pachyderm
+@testable import ComposeUI
+import InstanceFeatures
 
 class CharacterCounterTests: XCTestCase {
 
@@ -17,31 +18,33 @@ class CharacterCounterTests: XCTestCase {
     override func tearDown() {
     }
     
+    let features = InstanceFeatures()
+
     func testCountEmpty() {
-        XCTAssertEqual(CharacterCounter.count(text: ""), 0)
+        XCTAssertEqual(CharacterCounter.count(text: "", for: features), 0)
     }
     
     func testCountPlainText() {
-        XCTAssertEqual(CharacterCounter.count(text: "This is an example message"), 26)
-        XCTAssertEqual(CharacterCounter.count(text: "This is an example message with an Emoji: 😄"), 43)
-        XCTAssertEqual(CharacterCounter.count(text: "😄😄😄😄😄😄😄"), 7)
+        XCTAssertEqual(CharacterCounter.count(text: "This is an example message", for: features), 26)
+        XCTAssertEqual(CharacterCounter.count(text: "This is an example message with an Emoji: 😄", for: features), 43)
+        XCTAssertEqual(CharacterCounter.count(text: "😄😄😄😄😄😄😄", for: features), 7)
     }
     
     func testCountLinks() {
-        XCTAssertEqual(CharacterCounter.count(text: "This is an example with a link: https://example.com"), 55)
-        XCTAssertEqual(CharacterCounter.count(text: "This is an example with a link 😄: https://example.com"), 57)
-        XCTAssertEqual(CharacterCounter.count(text: "😄😄😄😄😄😄😄: https://example.com"), 32)
-        XCTAssertEqual(CharacterCounter.count(text: "This is an example with a link: https://a.much.longer.example.com/link?foo=bar#baz"), 55)
+        XCTAssertEqual(CharacterCounter.count(text: "This is an example with a link: https://example.com", for: features), 55)
+        XCTAssertEqual(CharacterCounter.count(text: "This is an example with a link 😄: https://example.com", for: features), 57)
+        XCTAssertEqual(CharacterCounter.count(text: "😄😄😄😄😄😄😄: https://example.com", for: features), 32)
+        XCTAssertEqual(CharacterCounter.count(text: "This is an example with a link: https://a.much.longer.example.com/link?foo=bar#baz", for: features), 55)
     }
     
     func testCountLocalMentions() {
-        XCTAssertEqual(CharacterCounter.count(text: "hello @example"), 14)
-        XCTAssertEqual(CharacterCounter.count(text: "@some_really_long_name"), 22)
+        XCTAssertEqual(CharacterCounter.count(text: "hello @example", for: features), 14)
+        XCTAssertEqual(CharacterCounter.count(text: "@some_really_long_name", for: features), 22)
     }
     
     func testCountRemoteMentions() {
-        XCTAssertEqual(CharacterCounter.count(text: "hello @example@some.remote.social"), 14)
-        XCTAssertEqual(CharacterCounter.count(text: "hello @some_really_long_name@some-long.remote-instance.social"), 28)
+        XCTAssertEqual(CharacterCounter.count(text: "hello @example@some.remote.social", for: features), 14)
+        XCTAssertEqual(CharacterCounter.count(text: "hello @some_really_long_name@some-long.remote-instance.social", for: features), 28)
     }
 
 }

Packages/ComposeUI/Tests/ComposeUITests/FuzzyMatcherTests.swift

@@ -0,0 +1,25 @@
+//
+//  FuzzyMatcherTests.swift
+//  ComposeUITests
+//
+//  Created by Shadowfacts on 10/11/20.
+//  Copyright © 2020 Shadowfacts. All rights reserved.
+//
+
+import XCTest
+@testable import ComposeUI
+
+class FuzzyMatcherTests: XCTestCase {
+
+    func testExample() throws {
+        XCTAssertEqual(FuzzyMatcher.match(pattern: "foo", str: "foo").score, 6)
+        XCTAssertEqual(FuzzyMatcher.match(pattern: "foo", str: "faoao").score, 4)
+        XCTAssertEqual(FuzzyMatcher.match(pattern: "foo", str: "aaa").score, -6)
+        
+        XCTAssertEqual(FuzzyMatcher.match(pattern: "bar", str: "baz").score, 2)
+        XCTAssertEqual(FuzzyMatcher.match(pattern: "bar", str: "bur").score, 1)
+        
+        XCTAssertGreaterThan(FuzzyMatcher.match(pattern: "sir", str: "sir").score, FuzzyMatcher.match(pattern: "sir", str: "georgespolitzer").score)
+    }
+
+}

Packages/Duckable/Sources/Duckable/API.swift

@@ -10,6 +10,8 @@ import UIKit
 public protocol DuckableViewController: UIViewController {
     var duckableDelegate: DuckableViewControllerDelegate? { get set }
     
+    func duckableViewControllerShouldDuck() -> DuckAttemptAction
+    
     func duckableViewControllerMayAttemptToDuck()
     
     func duckableViewControllerWillAnimateDuck(withDuration duration: CGFloat, afterDelay delay: CGFloat)
@@ -18,6 +20,7 @@ public protocol DuckableViewController: UIViewController {
 }
 
 extension DuckableViewController {
+    public func duckableViewControllerShouldDuck() -> DuckAttemptAction { .duck }
     public func duckableViewControllerMayAttemptToDuck() {}
     public func duckableViewControllerWillAnimateDuck(withDuration duration: CGFloat, afterDelay delay: CGFloat) {}
     public func duckableViewControllerDidFinishAnimatingDuck() {}
@@ -27,6 +30,12 @@ public protocol DuckableViewControllerDelegate: AnyObject {
     func duckableViewControllerWillDismiss(animated: Bool)
 }
 
+public enum DuckAttemptAction {
+    case duck
+    case dismiss
+    case block
+}
+
 extension UIViewController {
     @available(iOS 16.0, *)
     public func presentDuckable(_ viewController: DuckableViewController, animated: Bool, isDucked: Bool = false) -> Bool {

Packages/Duckable/Sources/Duckable/DuckAnimationController.swift

@@ -63,6 +63,9 @@ class DuckAnimationController: NSObject, UIViewControllerAnimatedTransitioning {
             let fadeAnimator = UIViewPropertyAnimator(duration: 0.1, curve: .linear) {
                 presented.view.layer.opacity = 0
             }
+            fadeAnimator.addCompletion { _ in
+                presented.view.layer.opacity = 1
+            }
             fadeAnimator.startAnimation(afterDelay: 0.3)
 
         } else {
@@ -80,6 +83,7 @@ class DuckAnimationController: NSObject, UIViewControllerAnimatedTransitioning {
                 presented.view.layer.opacity = 0
             }
             fadeAnimator.addCompletion { _ in
+                presented.view.layer.opacity = 1
                 duckable.duckableViewControllerDidFinishAnimatingDuck()
                 transitionContext.completeTransition(true)
             }

Packages/Duckable/Sources/Duckable/DuckableContainerViewController.swift

@@ -88,10 +88,9 @@ public class DuckableContainerViewController: UIViewController, DuckableViewCont
     
     private func doPresentDuckable(_ viewController: DuckableViewController, animated: Bool, completion: (() -> Void)?) {
         viewController.duckableDelegate = self
-        let nav = UINavigationController(rootViewController: viewController)
-        nav.modalPresentationStyle = .custom
-        nav.transitioningDelegate = self
-        present(nav, animated: animated) {
+        viewController.modalPresentationStyle = .custom
+        viewController.transitioningDelegate = self
+        present(viewController, animated: animated) {
             self.configureChildForDuckedPlaceholder()
             completion?()
         }
@@ -136,10 +135,18 @@ public class DuckableContainerViewController: UIViewController, DuckableViewCont
         guard case .presentingDucked(let viewController, isFirstPresentation: _) = state else {
             return
         }
+        switch viewController.duckableViewControllerShouldDuck() {
+        case .duck:
             let placeholder = createPlaceholderForDuckedViewController(viewController)
             state = .ducked(viewController, placeholder: placeholder)
             configureChildForDuckedPlaceholder()
             dismiss(animated: true)
+        case .block:
+            viewController.sheetPresentationController!.selectedDetentIdentifier = .large
+        case .dismiss:
+            duckableViewControllerWillDismiss(animated: true)
+            dismiss(animated: true)
+        }
     }
     
     private func configureChildForDuckedPlaceholder() {
@@ -148,6 +155,7 @@ public class DuckableContainerViewController: UIViewController, DuckableViewCont
         bottomConstraint.isActive = true
         
         child.view.layer.cornerRadius = duckedCornerRadius
+        child.view.layer.cornerCurve = .continuous
         child.view.layer.maskedCorners = [.layerMinXMaxYCorner, .layerMaxXMaxYCorner]
         child.view.layer.masksToBounds = true
     }
@@ -236,4 +244,3 @@ extension DuckableContainerViewController: UISheetPresentationControllerDelegate
         }
     }
 }
-

Packages/InstanceFeatures/.gitignore

@@ -0,0 +1,9 @@
+.DS_Store
+/.build
+/Packages
+/*.xcodeproj
+xcuserdata/
+DerivedData/
+.swiftpm/config/registries.json
+.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
+.netrc

Packages/InstanceFeatures/Package.resolved

@@ -0,0 +1,23 @@
+{
+  "pins" : [
+    {
+      "identity" : "swift-system",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-system.git",
+      "state" : {
+        "revision" : "025bcb1165deab2e20d4eaba79967ce73013f496",
+        "version" : "1.2.1"
+      }
+    },
+    {
+      "identity" : "swift-url",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/karwa/swift-url.git",
+      "state" : {
+        "branch" : "main",
+        "revision" : "220f6ab9d8a7e0742f85eb9f21b745942e001ae6"
+      }
+    }
+  ],
+  "version" : 2
+}

Packages/InstanceFeatures/Package.swift

@@ -0,0 +1,31 @@
+// swift-tools-version: 5.7
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "InstanceFeatures",
+    platforms: [
+        .iOS(.v15),
+    ],
+    products: [
+        // Products define the executables and libraries a package produces, and make them visible to other packages.
+        .library(
+            name: "InstanceFeatures",
+            targets: ["InstanceFeatures"]),
+    ],
+    dependencies: [
+        // Dependencies declare other packages that this package depends on.
+        .package(path: "../Pachyderm"),
+    ],
+    targets: [
+        // Targets are the basic building blocks of a package. A target can define a module or a test suite.
+        // Targets can depend on other targets in this package, and on products in packages this package depends on.
+        .target(
+            name: "InstanceFeatures",
+            dependencies: ["Pachyderm"]),
+        .testTarget(
+            name: "InstanceFeaturesTests",
+            dependencies: ["InstanceFeatures"]),
+    ]
+)

Packages/InstanceFeatures/README.md

@@ -0,0 +1,3 @@
+# InstanceFeatures
+
+A description of this package.

Packages/InstanceFeatures/Sources/InstanceFeatures/InstanceFeatures.swift

@@ -7,17 +7,23 @@
 //
 
 import Foundation
+import Combine
 import Pachyderm
-import Sentry
 
-struct InstanceFeatures {
+public class InstanceFeatures: ObservableObject {
     private static let pleromaVersionRegex = try! NSRegularExpression(pattern: "\\(compatible; pleroma (.*)\\)", options: .caseInsensitive)
     private static let akkomaVersionRegex = try! NSRegularExpression(pattern: "\\(compatible; akkoma (.*)\\)", options: .caseInsensitive)
     
-    private var instanceType: InstanceType = .mastodon(.vanilla, nil)
-    private(set) var maxStatusChars = 500
+    private let _featuresUpdated = PassthroughSubject<Void, Never>()
+    public var featuresUpdated: some Publisher<Void, Never> { _featuresUpdated }
     
-    var localOnlyPosts: Bool {
+    @Published @_spi(InstanceType) public private(set) var instanceType: InstanceType = .mastodon(.vanilla, nil)
+    @Published public private(set) var maxStatusChars = 500
+    @Published public private(set) var charsReservedPerURL = 23
+    @Published public private(set) var maxPollOptionChars: Int?
+    @Published public private(set) var maxPollOptionsCount: Int?
+    
+    public var localOnlyPosts: Bool {
         switch instanceType {
         case .mastodon(.hometown(_), _), .mastodon(.glitch, _):
             return true
@@ -26,19 +32,19 @@ struct InstanceFeatures {
         }
     }
     
-    var mastodonAttachmentRestrictions: Bool {
+    public var mastodonAttachmentRestrictions: Bool {
         instanceType.isMastodon
     }
     
-    var pollsAndAttachments: Bool {
+    public var pollsAndAttachments: Bool {
         instanceType.isPleroma
     }
     
-    var boostToOriginalAudience: Bool {
+    public var boostToOriginalAudience: Bool {
         instanceType.isPleroma || instanceType.isMastodon
     }
     
-    var profilePinnedStatuses: Bool {
+    public var profilePinnedStatuses: Bool {
         switch instanceType {
         case .pixelfed:
             return false
@@ -47,33 +53,33 @@ struct InstanceFeatures {
         }
     }
     
-    var trends: Bool {
+    public var trends: Bool {
         instanceType.isMastodon
     }
     
-    var profileSuggestions: Bool {
+    public var profileSuggestions: Bool {
         instanceType.isMastodon && hasMastodonVersion(3, 4, 0)
     }
     
-    var trendingStatusesAndLinks: Bool {
+    public var trendingStatusesAndLinks: Bool {
         instanceType.isMastodon && hasMastodonVersion(3, 5, 0)
     }
     
-    var reblogVisibility: Bool {
+    public var reblogVisibility: Bool {
         (instanceType.isMastodon && hasMastodonVersion(2, 8, 0))
             || (instanceType.isPleroma && hasPleromaVersion(2, 0, 0))
     }
     
-    var probablySupportsMarkdown: Bool {
+    public var probablySupportsMarkdown: Bool {
         switch instanceType {
-        case .pleroma(_), .mastodon(.glitch, _), .mastodon(.hometown(_), _):
+        case .pleroma(_), .mastodon(.glitch, _), .mastodon(.hometown(_), _), .calckey(_):
             return true
         default:
             return false
         }
     }
     
-    var needsLocalOnlyEmojiHack: Bool {
+    public var needsLocalOnlyEmojiHack: Bool {
         if case .mastodon(.glitch, _) = instanceType {
             return true
         } else {
@@ -81,34 +87,61 @@ struct InstanceFeatures {
         }
     }
     
-    var needsWideColorGamutHack: Bool {
-        if case .mastodon(_, .some(let version)) = instanceType {
+    public var needsWideColorGamutHack: Bool {
+        if case .mastodon(_, let version) = instanceType {
             return version < Version(4, 0, 0)
         } else {
             return true
         }
     }
     
-    var canFollowHashtags: Bool {
+    public var canFollowHashtags: Bool {
         hasMastodonVersion(4, 0, 0)
     }
     
-    var filtersV2: Bool {
+    public var filtersV2: Bool {
         hasMastodonVersion(4, 0, 0)
     }
     
-    var notificationsAllowedTypes: Bool {
+    public var notificationsAllowedTypes: Bool {
         hasMastodonVersion(3, 5, 0)
     }
     
-    var pollVotersCount: Bool {
+    public var pollVotersCount: Bool {
         instanceType.isMastodon
     }
     
-    mutating func update(instance: Instance, nodeInfo: NodeInfo?) {
+    public var createStatusWithLanguage: Bool {
+        instanceType.isMastodon || instanceType.isPleroma(.akkoma(nil))
+    }
+    
+    public var editStatuses: Bool {
+        switch instanceType {
+        case .mastodon(_, let v) where v >= Version(3, 5, 0):
+            return true
+        case .pleroma(.vanilla(let v)) where v >= Version(2, 5, 0):
+            return true
+        case .pleroma(.akkoma(_)):
+            return true
+        default:
+            return false
+        }
+    }
+    
+    public var needsEditAttachmentsInSeparateRequest: Bool {
+        instanceType.isPleroma(.akkoma(nil))
+    }
+    
+    public init() {
+    }
+    
+    public func update(instance: Instance, nodeInfo: NodeInfo?) {
         let ver = instance.version.lowercased()
+        // check glitch first b/c it still reports "mastodon" as the software in nodeinfo
         if ver.contains("glitch") {
             instanceType = .mastodon(.glitch, Version(string: ver))
+        } else if nodeInfo?.software.name == "mastodon" {
+            instanceType = .mastodon(.vanilla, Version(string: ver))
         } else if nodeInfo?.software.name == "hometown" {
             var mastoVersion: Version?
             var hometownVersion: Version?
@@ -144,17 +177,26 @@ struct InstanceFeatures {
             instanceType = .pleroma(.akkoma(akkomaVersion))
         } else if ver.contains("pixelfed") {
             instanceType = .pixelfed
+        } else if nodeInfo?.software.name == "gotosocial" {
+            instanceType = .gotosocial
+        } else if ver.contains("calckey") {
+            instanceType = .calckey(nodeInfo?.software.version)
         } else {
             instanceType = .mastodon(.vanilla, Version(string: ver))
         }
         
         maxStatusChars = instance.maxStatusCharacters ?? 500
-        
-        setInstanceBreadcrumb(instance: instance, nodeInfo: nodeInfo)
+        charsReservedPerURL = instance.configuration?.statuses.charactersReservedPerURL ?? 23 // default Mastodon link length
+        if let pollsConfig = instance.pollsConfiguration {
+            maxPollOptionChars = pollsConfig.maxCharactersPerOption
+            maxPollOptionsCount = pollsConfig.maxOptions
         }
         
-    func hasMastodonVersion(_ major: Int, _ minor: Int, _ patch: Int) -> Bool {
-        if case .mastodon(_, .some(let version)) = instanceType {
+        _featuresUpdated.send()
+    }
+    
+    public func hasMastodonVersion(_ major: Int, _ minor: Int, _ patch: Int) -> Bool {
+        if case .mastodon(_, let version) = instanceType {
             return version >= Version(major, minor, patch)
         } else {
             return false
@@ -163,7 +205,7 @@ struct InstanceFeatures {
     
     func hasPleromaVersion(_ major: Int, _ minor: Int, _ patch: Int) -> Bool {
         switch instanceType {
-        case .pleroma(.vanilla(.some(let version))), .pleroma(.akkoma(.some(let version))):
+        case .pleroma(.vanilla(let version)), .pleroma(.akkoma(let version)):
             return version >= Version(major, minor, patch)
         default:
             return false
@@ -172,10 +214,12 @@ struct InstanceFeatures {
 }
 
 extension InstanceFeatures {
-    enum InstanceType {
+    @_spi(InstanceType) public enum InstanceType {
         case mastodon(MastodonType, Version?)
         case pleroma(PleromaType)
         case pixelfed
+        case gotosocial
+        case calckey(String?)
         
         var isMastodon: Bool {
             if case .mastodon(_, _) = self {
@@ -185,6 +229,15 @@ extension InstanceFeatures {
             }
         }
         
+        func isMastodon(_ subtype: MastodonType) -> Bool {
+            if case .mastodon(let t, _) = self,
+               t.equalsIgnoreVersion(subtype) {
+                return true
+            } else {
+                return false
+            }
+        }
+        
         var isPleroma: Bool {
             if case .pleroma(_) = self {
                 return true
@@ -192,86 +245,49 @@ extension InstanceFeatures {
                 return false
             }
         }
-    }
         
-    enum MastodonType {
-        case vanilla
-        case hometown(Version?)
-        case glitch
-    }
-    
-    enum PleromaType {
-        case vanilla(Version?)
-        case akkoma(Version?)
-    }
-}
-
-extension InstanceFeatures {
-    struct Version: Equatable, Comparable {
-        private static let regex = try! NSRegularExpression(pattern: "^(\\d+)\\.(\\d+)\\.(\\d+).*$")
-        
-        let major: Int
-        let minor: Int
-        let patch: Int
-        
-        init(_ major: Int, _ minor: Int, _ patch: Int) {
-            self.major = major
-            self.minor = minor
-            self.patch = patch
-        }
-        
-        init?(string: String) {
-            guard let match = Version.regex.firstMatch(in: string, range: NSRange(location: 0, length: string.utf16.count)),
-                  match.numberOfRanges == 4 else {
-                return nil
-            }
-            let majorStr = (string as NSString).substring(with: match.range(at: 1))
-            let minorStr = (string as NSString).substring(with: match.range(at: 2))
-            let patchStr = (string as NSString).substring(with: match.range(at: 3))
-            guard let major = Int(majorStr),
-                  let minor = Int(minorStr),
-                  let patch = Int(patchStr) else {
-                return nil
-            }
-            self.major = major
-            self.minor = minor
-            self.patch = patch
-        }
-        
-        static func ==(lhs: Version, rhs: Version) -> Bool {
-            return lhs.major == rhs.major && lhs.minor == rhs.minor && lhs.patch == rhs.patch
-        }
-        
-        static func < (lhs: InstanceFeatures.Version, rhs: InstanceFeatures.Version) -> Bool {
-            if lhs.major < rhs.major {
-                return true
-            } else if lhs.major > rhs.major {
-                return false
-            } else if lhs.minor < rhs.minor {
-                return true
-            } else if lhs.minor > rhs.minor {
-                return false
-            } else if lhs.patch < rhs.patch {
+        func isPleroma(_ subtype: PleromaType) -> Bool {
+            if case .pleroma(let t) = self,
+               t.equalsIgnoreVersion(subtype) {
                 return true
             } else {
                 return false
             }
         }
     }
-}
     
-private func setInstanceBreadcrumb(instance: Instance, nodeInfo: NodeInfo?) {
-    let crumb = Breadcrumb(level: .info, category: "MastodonController")
-    crumb.data = [
-        "instance": [
-            "version": instance.version
-        ],
-    ]
-    if let nodeInfo {
-        crumb.data!["nodeInfo"] = [
-            "software": nodeInfo.software.name,
-            "version": nodeInfo.software.version,
-        ]
+    @_spi(InstanceType) public enum MastodonType {
+        case vanilla
+        case hometown(Version?)
+        case glitch
+        
+        func equalsIgnoreVersion(_ other: MastodonType) -> Bool {
+            switch (self, other) {
+            case (.vanilla, .vanilla):
+                return true
+            case (.hometown(_), .hometown(_)):
+                return true
+            case (.glitch, .glitch):
+                return true
+            default:
+                return false
+            }
+        }
+    }
+    
+    @_spi(InstanceType) public enum PleromaType {
+        case vanilla(Version?)
+        case akkoma(Version?)
+        
+        func equalsIgnoreVersion(_ other: PleromaType) -> Bool {
+            switch (self, other) {
+            case (.vanilla(_), .vanilla(_)):
+                return true
+            case (.akkoma(_), .akkoma(_)):
+                return true
+            default:
+                return false
+            }
+        }
     }
-    SentrySDK.addBreadcrumb(crumb)
 }

Packages/InstanceFeatures/Sources/InstanceFeatures/Version.swift

@@ -0,0 +1,80 @@
+//
+//  Version.swift
+//  InstanceFeatures
+//
+//  Created by Shadowfacts on 5/14/23.
+//
+
+import Foundation
+
+@_spi(InstanceType) public struct Version: Equatable, Comparable, CustomStringConvertible {
+    private static let regex = try! NSRegularExpression(pattern: "^(\\d+)\\.(\\d+)\\.(\\d+).*$")
+    
+    let major: Int
+    let minor: Int
+    let patch: Int
+    
+    init(_ major: Int, _ minor: Int, _ patch: Int) {
+        self.major = major
+        self.minor = minor
+        self.patch = patch
+    }
+    
+    init?(string: String) {
+        guard let match = Version.regex.firstMatch(in: string, range: NSRange(location: 0, length: string.utf16.count)),
+              match.numberOfRanges == 4 else {
+            return nil
+        }
+        let majorStr = (string as NSString).substring(with: match.range(at: 1))
+        let minorStr = (string as NSString).substring(with: match.range(at: 2))
+        let patchStr = (string as NSString).substring(with: match.range(at: 3))
+        guard let major = Int(majorStr),
+              let minor = Int(minorStr),
+              let patch = Int(patchStr) else {
+            return nil
+        }
+        self.major = major
+        self.minor = minor
+        self.patch = patch
+    }
+    
+    public var description: String {
+        "\(major).\(minor).\(patch)"
+    }
+    
+    public static func ==(lhs: Version, rhs: Version) -> Bool {
+        return lhs.major == rhs.major && lhs.minor == rhs.minor && lhs.patch == rhs.patch
+    }
+    
+    public static func <(lhs: Version, rhs: Version) -> Bool {
+        if lhs.major < rhs.major {
+            return true
+        } else if lhs.major > rhs.major {
+            return false
+        } else if lhs.minor < rhs.minor {
+            return true
+        } else if lhs.minor > rhs.minor {
+            return false
+        } else if lhs.patch < rhs.patch {
+            return true
+        } else {
+            return false
+        }
+    }
+}
+
+func <(lhs: Version?, rhs: Version) -> Bool {
+    guard let lhs else {
+        // nil is less than or equal to everything
+        return true
+    }
+    return lhs < rhs
+}
+    
+func >=(lhs: Version?, rhs: Version) -> Bool {
+    guard let lhs else {
+        // nil is less than or equal to everything
+        return false
+    }
+    return lhs >= rhs
+}

Packages/InstanceFeatures/Tests/InstanceFeaturesTests/VersionTests.swift

@@ -1,13 +1,13 @@
 //
 //  VersionTests.swift
-//  TuskerTests
+//  InstanceFeaturesTests
 //
 //  Created by Shadowfacts on 4/2/22.
 //  Copyright © 2022 Shadowfacts. All rights reserved.
 //
 
 import XCTest
-@testable import Tusker
+@testable import InstanceFeatures
 
 class VersionTests: XCTestCase {
     

Packages/MatchedGeometryPresentation/.gitignore

@@ -0,0 +1,9 @@
+.DS_Store
+/.build
+/Packages
+/*.xcodeproj
+xcuserdata/
+DerivedData/
+.swiftpm/config/registries.json
+.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
+.netrc

Packages/MatchedGeometryPresentation/Package.swift

@@ -0,0 +1,26 @@
+// swift-tools-version: 5.8
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "MatchedGeometryPresentation",
+    platforms: [
+        .iOS(.v15),
+    ],
+    products: [
+        // Products define the executables and libraries a package produces, making them visible to other packages.
+        .library(
+            name: "MatchedGeometryPresentation",
+            targets: ["MatchedGeometryPresentation"]),
+    ],
+    targets: [
+        // Targets are the basic building blocks of a package, defining a module or a test suite.
+        // Targets can depend on other targets in this package and products from dependencies.
+        .target(
+            name: "MatchedGeometryPresentation"),
+        // .testTarget(
+        //     name: "MatchedGeometryPresentationTests",
+        //     dependencies: ["MatchedGeometryPresentation"]),
+    ]
+)

Packages/MatchedGeometryPresentation/Sources/MatchedGeometryPresentation/MatchedGeometryModifiers.swift

@@ -0,0 +1,125 @@
+//
+//  MatchedGeometryModifiers.swift
+//  MatchGeom
+//
+//  Created by Shadowfacts on 4/24/23.
+//
+
+import SwiftUI
+
+extension View {
+    public func matchedGeometryPresentation<ID: Hashable, Presented: View>(id: Binding<ID?>, backgroundColor: UIColor, @ViewBuilder presenting: () -> Presented) -> some View {
+        self.modifier(MatchedGeometryPresentationModifier(id: id, backgroundColor: backgroundColor, presented: presenting()))
+    }
+    
+    public func matchedGeometrySource<ID: Hashable, ID2: Hashable>(id: ID, presentationID: ID2) -> some View {
+        self.modifier(MatchedGeometrySourceModifier(id: AnyHashable(id), presentationID: AnyHashable(presentationID), matched: { AnyView(self) }))
+    }
+    
+    public func matchedGeometryDestination<ID: Hashable>(id: ID) -> some View {
+        self.modifier(MatchedGeometryDestinationModifier(id: AnyHashable(id), matched: self))
+    }
+}
+
+private struct MatchedGeometryPresentationModifier<ID: Hashable, Presented: View>: ViewModifier {
+    @Binding var id: ID?
+    let backgroundColor: UIColor
+    let presented: Presented
+    @StateObject private var state = MatchedGeometryState()
+    
+    private var isPresented: Binding<Bool> {
+        Binding {
+            id != nil
+        } set: {
+            if $0 {
+                fatalError()
+            } else {
+                id = nil
+            }
+        }
+    }
+    
+    func body(content: Content) -> some View {
+        content
+            .environmentObject(state)
+            .backgroundPreferenceValue(MatchedGeometrySourcesKey.self, { sources in
+                Color.clear
+                    .presentViewController(makeVC(allSources: sources), isPresented: isPresented)
+            })
+    }
+    
+    private func makeVC(allSources: [SourceKey: (AnyView, CGRect)]) -> () -> UIViewController {
+        return {
+            // force unwrap is safe, this closure is only called when being presented so we must have an id
+            let id = AnyHashable(id!)
+            return MatchedGeometryViewController(
+                presentationID: id,
+                content: presented,
+                state: state,
+                backgroundColor: backgroundColor
+            )
+        }
+    }
+}
+
+private struct MatchedGeometrySourceModifier: ViewModifier {
+    let id: AnyHashable
+    let presentationID: AnyHashable
+    let matched: () -> AnyView
+    @EnvironmentObject private var state: MatchedGeometryState
+    
+    func body(content: Content) -> some View {
+        content
+            .background(GeometryReader { proxy in
+                Color.clear
+                    .preference(key: MatchedGeometryDestinationFrameKey.self, value: proxy.frame(in: .global))
+                    .onPreferenceChange(MatchedGeometryDestinationFrameKey.self) { newValue in
+                        if let newValue {
+                            state.sources[SourceKey(presentationID: presentationID, matchedID: id)] = (matched, newValue)
+                        }
+                    }
+            })
+            .opacity(state.animating && state.presentationID == presentationID ? 0 : 1)
+    }
+}
+
+private struct MatchedGeometryDestinationModifier<Matched: View>: ViewModifier {
+    let id: AnyHashable
+    let matched: Matched
+    @EnvironmentObject private var state: MatchedGeometryState
+    
+    func body(content: Content) -> some View {
+        content
+            .background(GeometryReader { proxy in
+                Color.clear
+                    .preference(key: MatchedGeometryDestinationFrameKey.self, value: proxy.frame(in: .global))
+                    .onPreferenceChange(MatchedGeometryDestinationFrameKey.self) { newValue in
+                        if let newValue,
+                           // ignore intermediate layouts that may happen while the dismiss animation is happening
+                           state.mode != .dismissing {
+                            state.destinations[id] = (AnyView(matched), newValue)
+                        }
+                    }
+            })
+            .opacity(state.animating ? 0 : 1)
+    }
+}
+
+private struct MatchedGeometryDestinationFrameKey: PreferenceKey {
+    static let defaultValue: CGRect? = nil
+    static func reduce(value: inout CGRect?, nextValue: () -> CGRect?) {
+        value = nextValue()
+    }
+}
+
+private struct MatchedGeometrySourcesKey: PreferenceKey {
+    static let defaultValue: [SourceKey: (AnyView, CGRect)] = [:]
+    static func reduce(value: inout Value, nextValue: () -> Value) {
+        value.merge(nextValue(), uniquingKeysWith: { _, new in new })
+    }
+}
+
+struct SourceKey: Hashable {
+    let presentationID: AnyHashable
+    let matchedID: AnyHashable
+}

Packages/MatchedGeometryPresentation/Sources/MatchedGeometryPresentation/MatchedGeometryViewController.swift

@@ -0,0 +1,238 @@
+//
+//  MatchedGeometryViewController.swift
+//  MatchGeom
+//
+//  Created by Shadowfacts on 4/24/23.
+//
+
+import SwiftUI
+import Combine
+
+private let mass: CGFloat = 1
+private let presentStiffness: CGFloat = 300
+private let presentDamping: CGFloat = 20
+private let dismissStiffness: CGFloat = 200
+private let dismissDamping: CGFloat = 20
+
+public class MatchedGeometryState: ObservableObject {
+    @Published var presentationID: AnyHashable?
+    @Published var animating: Bool = false
+    @Published public var mode: Mode = .presenting
+    @Published var sources: [SourceKey: (() -> AnyView, CGRect)] = [:]
+    @Published var currentFrames: [AnyHashable: CGRect] = [:]
+    @Published var destinations: [AnyHashable: (AnyView, CGRect)] = [:]
+    
+    public enum Mode: Equatable {
+        case presenting
+        case idle
+        case dismissing
+    }
+}
+
+class MatchedGeometryViewController<Content: View>: UIViewController, UIViewControllerTransitioningDelegate {
+    
+    let presentationID: AnyHashable
+    let content: Content
+    let state: MatchedGeometryState
+    let backgroundColor: UIColor
+    var contentHost: UIHostingController<ContentContainerView>!
+    var matchedHost: UIHostingController<MatchedContainerView>!
+    
+    init(presentationID: AnyHashable, content: Content, state: MatchedGeometryState, backgroundColor: UIColor) {
+        self.presentationID = presentationID
+        self.content = content
+        self.state = state
+        self.backgroundColor = backgroundColor
+        
+        super.init(nibName: nil, bundle: nil)
+        
+        modalPresentationStyle = .custom
+        transitioningDelegate = self
+    }
+    
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        
+        contentHost = UIHostingController(rootView: ContentContainerView(content: content, state: state))
+        contentHost.view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
+        contentHost.view.frame = view.bounds
+        contentHost.view.backgroundColor = backgroundColor
+        addChild(contentHost)
+        view.addSubview(contentHost.view)
+        contentHost.didMove(toParent: self)
+    }
+    
+    override func viewWillAppear(_ animated: Bool) {
+        super.viewWillAppear(animated)
+        
+        state.presentationID = presentationID
+    }
+    
+    var currentPresentationSources: [AnyHashable: (() -> AnyView, CGRect)] {
+        Dictionary(uniqueKeysWithValues: state.sources.filter { $0.key.presentationID == presentationID }.map { ($0.key.matchedID, $0.value) })
+    }
+    
+    func addMatchedHostingController() {
+        let sources = currentPresentationSources.map { (id: $0.key, view: $0.value.0) }
+        matchedHost = UIHostingController(rootView: MatchedContainerView(sources: sources, state: state))
+        matchedHost.view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
+        matchedHost.view.frame = view.bounds
+        matchedHost.view.backgroundColor = .clear
+        matchedHost.view.layer.zPosition = 100
+        addChild(matchedHost)
+        view.addSubview(matchedHost.view)
+        matchedHost.didMove(toParent: self)
+    }
+    
+    struct ContentContainerView: View {
+        let content: Content
+        let state: MatchedGeometryState
+        
+        var body: some View {
+            content
+                .environmentObject(state)
+        }
+    }
+    
+    struct MatchedContainerView: View {
+        let sources: [(id: AnyHashable, view: () -> AnyView)]
+        @ObservedObject var state: MatchedGeometryState
+        
+        var body: some View {
+            ZStack {
+                ForEach(sources, id: \.id) { (id, view) in
+                    matchedView(id: id, source: view)
+                }
+            }
+        }
+        
+        @ViewBuilder
+        func matchedView(id: AnyHashable, source: () -> AnyView) -> some View {
+            if let frame = state.currentFrames[id],
+               let dest = state.destinations[id]?.0 {
+                ZStack {
+                    source()
+                    dest
+                        .opacity(state.mode == .presenting ? (state.animating ? 1 : 0) : (state.animating ? 0 : 1))
+                }
+                .frame(width: frame.width, height: frame.height)
+                .position(x: frame.midX, y: frame.midY)
+                .ignoresSafeArea()
+                .animation(.interpolatingSpring(mass: Double(mass), stiffness: Double(state.mode == .presenting ? presentStiffness : dismissStiffness), damping: Double(state.mode == .presenting ? presentDamping : dismissDamping), initialVelocity: 0), value: frame)
+            }
+        }
+    }
+    
+    // MARK: UIViewControllerTransitioningDelegate
+    func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
+        return MatchedGeometryPresentationAnimationController<Content>()
+    }
+    
+    func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
+        return MatchedGeometryDismissAnimationController<Content>()
+    }
+    
+    func presentationController(forPresented presented: UIViewController, presenting: UIViewController?, source: UIViewController) -> UIPresentationController? {
+        return MatchedGeometryPresentationController(presentedViewController: presented, presenting: presenting)
+    }
+    
+}
+
+class MatchedGeometryPresentationAnimationController<Content: View>: NSObject, UIViewControllerAnimatedTransitioning {
+    func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
+        return 0.8
+    }
+
+    func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
+        let matchedGeomVC = transitionContext.viewController(forKey: .to) as! MatchedGeometryViewController<Content>
+        let container = transitionContext.containerView
+        
+        // add the VC to the container, which kicks off layout out the content hosting controller
+        matchedGeomVC.view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
+        matchedGeomVC.view.frame = container.bounds
+        container.addSubview(matchedGeomVC.view)
+        
+        // layout out the content hosting controller and having enough destinations may take a while
+        // so listen for when it's ready, rather than trying to guess at the timing
+        let cancellable = matchedGeomVC.state.$destinations
+            .filter { destinations in matchedGeomVC.currentPresentationSources.allSatisfy { source in destinations.keys.contains(source.key) } }
+            .first()
+            .sink { destinations in
+                matchedGeomVC.addMatchedHostingController()
+                
+                // setup the initial state for the animation
+                matchedGeomVC.matchedHost.view.isHidden = true
+                matchedGeomVC.state.mode = .presenting
+                matchedGeomVC.state.currentFrames = matchedGeomVC.currentPresentationSources.mapValues(\.1)
+                
+                // wait one runloop iteration for the matched hosting controller to be setup
+                DispatchQueue.main.async {
+                    matchedGeomVC.matchedHost.view.isHidden = false
+                    matchedGeomVC.state.animating = true
+                    // get the now-current destinations, in case they've changed since the sunk value was published
+                    matchedGeomVC.state.currentFrames = matchedGeomVC.state.destinations.mapValues(\.1)
+                }
+            }
+        
+        matchedGeomVC.contentHost.view.layer.opacity = 0
+        let spring = UISpringTimingParameters(mass: mass, stiffness: presentStiffness, damping: presentDamping, initialVelocity: .zero)
+        let animator = UIViewPropertyAnimator(duration: self.transitionDuration(using: transitionContext), timingParameters: spring)
+        animator.addAnimations {
+            matchedGeomVC.contentHost.view.layer.opacity = 1
+        }
+        animator.addCompletion { _ in
+            transitionContext.completeTransition(true)
+            matchedGeomVC.state.animating = false
+            matchedGeomVC.state.mode = .idle
+            
+            matchedGeomVC.matchedHost?.view.removeFromSuperview()
+            matchedGeomVC.matchedHost?.removeFromParent()
+            cancellable.cancel()
+        }
+        animator.startAnimation()
+    }
+}
+
+class MatchedGeometryDismissAnimationController<Content: View>: NSObject, UIViewControllerAnimatedTransitioning {
+    func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
+        return 0.8
+    }
+    
+    func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
+        let matchedGeomVC = transitionContext.viewController(forKey: .from) as! MatchedGeometryViewController<Content>
+        
+        // recreate the matched host b/c using the current destinations doesn't seem to update the existing one
+        matchedGeomVC.addMatchedHostingController()
+        matchedGeomVC.matchedHost.view.isHidden = true
+        matchedGeomVC.state.mode = .dismissing
+        matchedGeomVC.state.currentFrames = matchedGeomVC.state.destinations.mapValues(\.1)
+        
+        DispatchQueue.main.async {
+            matchedGeomVC.matchedHost.view.isHidden = false
+            matchedGeomVC.state.animating = true
+            matchedGeomVC.state.currentFrames = matchedGeomVC.currentPresentationSources.mapValues(\.1)
+        }
+        
+        let spring = UISpringTimingParameters(mass: mass, stiffness: dismissStiffness, damping: dismissDamping, initialVelocity: .zero)
+        let animator = UIViewPropertyAnimator(duration: transitionDuration(using: transitionContext), timingParameters: spring)
+        animator.addAnimations {
+            matchedGeomVC.contentHost.view.layer.opacity = 0
+        }
+        animator.addCompletion { _ in
+            transitionContext.completeTransition(true)
+            matchedGeomVC.state.animating = false
+        }
+        animator.startAnimation()
+    }
+}
+
+class MatchedGeometryPresentationController: UIPresentationController {
+    override func dismissalTransitionWillBegin() {
+        super.dismissalTransitionWillBegin()
+        delegate?.presentationControllerWillDismiss?(self)
+    }
+}

Packages/MatchedGeometryPresentation/Sources/MatchedGeometryPresentation/View+PresentViewController.swift

@@ -0,0 +1,62 @@
+//
+//  View+PresentViewController.swift
+//  MatchGeom
+//
+//  Created by Shadowfacts on 4/24/23.
+//
+
+import SwiftUI
+
+extension View {
+    func presentViewController(_ makeVC: @escaping () -> UIViewController, isPresented: Binding<Bool>) -> some View {
+        self
+            .background(
+                ViewControllerPresenter(makeVC: makeVC, isPresented: isPresented)
+            )
+    }
+}
+
+private struct ViewControllerPresenter: UIViewControllerRepresentable {
+    let makeVC: () -> UIViewController
+    @Binding var isPresented: Bool
+    
+    func makeUIViewController(context: Context) -> UIViewController {
+        return UIViewController()
+    }
+    
+    func updateUIViewController(_ uiViewController: UIViewController, context: Context) {
+        if isPresented {
+            if uiViewController.presentedViewController == nil {
+                let presented = makeVC()
+                presented.presentationController!.delegate = context.coordinator
+                uiViewController.present(presented, animated: true)
+                context.coordinator.didPresent = true
+            }
+        } else {
+            if context.coordinator.didPresent,
+               let presentedViewController = uiViewController.presentedViewController,
+               !presentedViewController.isBeingDismissed {
+                uiViewController.dismiss(animated: true)
+                context.coordinator.didPresent = false
+            }
+        }
+    }
+    
+    func makeCoordinator() -> Coordinator {
+        return Coordinator(isPresented: $isPresented)
+    }
+    
+    class Coordinator: NSObject, UIAdaptivePresentationControllerDelegate {
+        @Binding var isPresented: Bool
+        var didPresent = false
+        
+        init(isPresented: Binding<Bool>) {
+            self._isPresented = isPresented
+        }
+        
+        func presentationControllerWillDismiss(_ presentationController: UIPresentationController) {
+            isPresented = false
+            didPresent = false
+        }
+    }
+}

Packages/Pachyderm/.swiftpm/xcode/xcshareddata/xcschemes/Pachyderm.xcscheme

@@ -17,7 +17,7 @@
                BlueprintIdentifier = "D61099AA2144B0CC00432DC2"
                BuildableName = "Pachyderm.framework"
                BlueprintName = "Pachyderm"
-               ReferencedContainer = "container:Tusker.xcodeproj">
+               ReferencedContainer = "container:../../Tusker.xcodeproj">
             </BuildableReference>
          </BuildActionEntry>
       </BuildActionEntries>
@@ -35,7 +35,7 @@
                BlueprintIdentifier = "PachydermTests"
                BuildableName = "PachydermTests"
                BlueprintName = "PachydermTests"
-               ReferencedContainer = "container:Pachyderm">
+               ReferencedContainer = "container:">
             </BuildableReference>
          </TestableReference>
       </Testables>
@@ -56,7 +56,7 @@
             BlueprintIdentifier = "D61099AA2144B0CC00432DC2"
             BuildableName = "Pachyderm.framework"
             BlueprintName = "Pachyderm"
-            ReferencedContainer = "container:Tusker.xcodeproj">
+            ReferencedContainer = "container:../../Tusker.xcodeproj">
          </BuildableReference>
       </MacroExpansion>
    </LaunchAction>
@@ -72,7 +72,7 @@
             BlueprintIdentifier = "D61099AA2144B0CC00432DC2"
             BuildableName = "Pachyderm.framework"
             BlueprintName = "Pachyderm"
-            ReferencedContainer = "container:Tusker.xcodeproj">
+            ReferencedContainer = "container:../../Tusker.xcodeproj">
          </BuildableReference>
       </MacroExpansion>
    </ProfileAction>

Packages/Pachyderm/Sources/Pachyderm/Client.swift

@@ -7,6 +7,7 @@
 //
 
 import Foundation
+import WebURL
 
 /**
  The base Mastodon API client.
@@ -83,7 +84,7 @@ public class Client {
                     completion(.failure(Error(request: request, type: .invalidResponse)))
                     return
             }
-            guard response.statusCode == 200 else {
+            guard response.statusCode == 200 || request.additionalAcceptableHTTPCodes.contains(response.statusCode) else {
                 let mastodonError = try? Client.decoder.decode(MastodonError.self, from: data)
                 let type: ErrorType = mastodonError.flatMap { .mastodonError(response.statusCode, $0.description) } ?? .unexpectedStatus(response.statusCode)
                 completion(.failure(Error(request: request, type: type)))
@@ -139,13 +140,14 @@ public class Client {
         }
     }
     
-    public func getAccessToken(authorizationCode: String, redirectURI: String, completion: @escaping Callback<LoginSettings>) {
+    public func getAccessToken(authorizationCode: String, redirectURI: String, scopes: [Scope], completion: @escaping Callback<LoginSettings>) {
         let request = Request<LoginSettings>(method: .post, path: "/oauth/token", body: ParametersBody([
                 "client_id" => clientID,
                 "client_secret" => clientSecret,
                 "grant_type" => "authorization_code",
                 "code" => authorizationCode,
-                "redirect_uri" => redirectURI
+                "redirect_uri" => redirectURI,
+                "scope" => scopes.scopeString,
             ]))
         run(request) { result in
             defer { completion(result) }
@@ -185,9 +187,9 @@ public class Client {
                 
             case let .success(wellKnown, _):
                 if let url = wellKnown.links.first(where: { $0.rel == "http://nodeinfo.diaspora.software/ns/schema/2.0" }),
-                   let components = URLComponents(string: url.href),
-                   components.host == self.baseURL.host {
-                    let nodeInfo = Request<NodeInfo>(method: .get, path: Endpoint(stringLiteral: components.path))
+                   let href = WebURL(url.href),
+                   href.host == WebURL(self.baseURL)?.host {
+                    let nodeInfo = Request<NodeInfo>(method: .get, path: Endpoint(stringLiteral: href.path))
                     self.run(nodeInfo, completion: completion)
                 }
             }
@@ -313,6 +315,13 @@ public class Client {
             ], attachment))
     }
     
+    public static func updateAttachment(id: String, description: String?, focus: (Float, Float)?) -> Request<Attachment> {
+        return Request(method: .put, path: "/api/v1/media/\(id)", body: FormDataBody([
+            "description" => description,
+            "focus" => focus
+        ], nil))
+    }
+    
     // MARK: - Mutes
     public static func getMutes(range: RequestRange) -> Request<[Account]> {
         var request = Request<[Account]>(method: .get, path: "/api/v1/mutes")
@@ -380,11 +389,11 @@ public class Client {
     public static func createStatus(text: String,
                                     contentType: StatusContentType = .plain,
                                     inReplyTo: String? = nil,
-                                    media: [Attachment]? = nil,
+                                    mediaIDs: [String]? = nil,
                                     sensitive: Bool? = nil,
                                     spoilerText: String? = nil,
-                                    visibility: Status.Visibility? = nil,
-                                    language: String? = nil,
+                                    visibility: Visibility? = nil,
+                                    language: String? = nil, // language supported by mastodon and akkoma
                                     pollOptions: [String]? = nil,
                                     pollExpiresIn: Int? = nil,
                                     pollMultiple: Bool? = nil,
@@ -400,7 +409,32 @@ public class Client {
                 "poll[expires_in]" => pollExpiresIn,
                 "poll[multiple]" => pollMultiple,
                 "local_only" => localOnly,
-            ] + "media_ids" => media?.map { $0.id } + "poll[options]" => pollOptions))
+            ] + "media_ids" => mediaIDs + "poll[options]" => pollOptions))
+    }
+    
+    public static func editStatus(
+        id: String,
+        text: String,
+        contentType: StatusContentType = .plain,
+        spoilerText: String?,
+        sensitive: Bool,
+        language: String?,
+        mediaIDs: [String],
+        mediaAttributes: [EditStatusMediaAttributes],
+        poll: EditPollParameters?
+    ) -> Request<Status> {
+        let params = EditStatusParameters(
+            id: id,
+            text: text,
+            contentType: contentType,
+            spoilerText: spoilerText,
+            sensitive: sensitive,
+            language: language,
+            mediaIDs: mediaIDs,
+            mediaAttributes: mediaAttributes,
+            poll: poll
+        )
+        return Request(method: .put, path: "/api/v1/statuses/\(id)", body: JsonBody(params))
     }
     
     // MARK: - Timelines
@@ -481,6 +515,12 @@ public class Client {
         ])
     }
     
+    // MARK: - Hashtags
+    /// Requires Mastodon 4.0.0+
+    public static func getHashtag(name: String) -> Request<Hashtag> {
+        return Request(method: .get, path: "/api/v1/tags/\(name)")
+    }
+
 }
 
 extension Client {
@@ -499,13 +539,15 @@ extension Client {
             self.type = type
         }
         
-        public var localizedDescription: String {
+        public var errorDescription: String? {
             switch type {
             case .networkError(let error):
                 return "Network Error: \(error.localizedDescription)"
             // todo: support more status codes
             case .unexpectedStatus(413):
                 return "HTTP 413: Payload Too Large"
+            case .unexpectedStatus(429):
+                return "HTTP 429: Rate Limit Exceeded"
             case .unexpectedStatus(let code):
                 return "HTTP Code \(code)"
             case .invalidRequest:

Packages/Pachyderm/Sources/Pachyderm/Model/Account.swift

@@ -70,12 +70,12 @@ public final class Account: AccountProtocol, Decodable, Sendable {
         }
     }
     
-    public static func authorizeFollowRequest(_ account: Account) -> Request<Relationship> {
-        return Request<Relationship>(method: .post, path: "/api/v1/follow_requests/\(account.id)/authorize")
+    public static func authorizeFollowRequest(_ accountID: String) -> Request<Relationship> {
+        return Request<Relationship>(method: .post, path: "/api/v1/follow_requests/\(accountID)/authorize")
     }
     
-    public static func rejectFollowRequest(_ account: Account) -> Request<Relationship> {
-        return Request<Relationship>(method: .post, path: "/api/v1/follow_requests/\(account.id)/reject")
+    public static func rejectFollowRequest(_ accountID: String) -> Request<Relationship> {
+        return Request<Relationship>(method: .post, path: "/api/v1/follow_requests/\(accountID)/reject")
     }
     
     public static func removeFromFollowRequests(_ account: Account) -> Request<Empty> {

Packages/Pachyderm/Sources/Pachyderm/Model/EditStatusParameters.swift

@@ -0,0 +1,97 @@
+//
+//  EditStatusParameters.swift
+//  Pachyderm
+//
+//  Created by Shadowfacts on 5/10/23.
+//
+
+import Foundation
+
+struct EditStatusParameters: Encodable, Sendable {
+    let id: String
+    let text: String
+    let contentType: StatusContentType
+    let spoilerText: String?
+    let sensitive: Bool
+    let language: String?
+    let mediaIDs: [String]
+    let mediaAttributes: [EditStatusMediaAttributes]
+    let poll: EditPollParameters?
+    
+    func encode(to encoder: Encoder) throws {
+        var container = encoder.container(keyedBy: CodingKeys.self)
+        try container.encode(self.id, forKey: .id)
+        try container.encode(self.text, forKey: .text)
+        try container.encode(self.contentType.mimeType, forKey: .contentType)
+        try container.encodeIfPresent(self.spoilerText, forKey: .spoilerText)
+        try container.encode(self.sensitive, forKey: .sensitive)
+        try container.encodeIfPresent(self.language, forKey: .language)
+        try container.encode(self.mediaIDs, forKey: .mediaIDs)
+        try container.encode(self.mediaAttributes, forKey: .mediaAttributes)
+        try container.encodeIfPresent(self.poll, forKey: .poll)
+    }
+    
+    enum CodingKeys: String, CodingKey {
+        case id
+        case text = "status"
+        case contentType = "content_type"
+        case spoilerText = "spoiler_text"
+        case sensitive
+        case language
+        case mediaIDs = "media_ids"
+        case mediaAttributes = "media_attributes"
+        case poll
+    }
+}
+
+public struct EditPollParameters: Encodable, Sendable {
+    let options: [String]
+    let expiresIn: Int
+    let multiple: Bool
+    
+    public init(options: [String], expiresIn: Int, multiple: Bool) {
+        self.options = options
+        self.expiresIn = expiresIn
+        self.multiple = multiple
+    }
+    
+    public func encode(to encoder: Encoder) throws {
+        var container = encoder.container(keyedBy: CodingKeys.self)
+        try container.encode(self.options, forKey: .options)
+        try container.encode(self.expiresIn, forKey: .expiresIn)
+        try container.encode(self.multiple, forKey: .multiple)
+    }
+    
+    enum CodingKeys: String, CodingKey {
+        case options
+        case expiresIn = "expires_in"
+        case multiple
+    }
+}
+
+public struct EditStatusMediaAttributes: Encodable, Sendable {
+    let id: String
+    let description: String
+    let focus: (Float, Float)?
+    
+    public init(id: String, description: String, focus: (Float, Float)?) {
+        self.id = id
+        self.description = description
+        self.focus = focus
+    }
+    
+    public func encode(to encoder: Encoder) throws {
+        var container = encoder.container(keyedBy: CodingKeys.self)
+        try container.encode(id, forKey: .id)
+        try container.encode(description, forKey: .description)
+        if let focus {
+            try container.encode("\(focus.0),\(focus.1)", forKey: .focus)
+        }
+    }
+    
+    enum CodingKeys: String, CodingKey {
+        case id
+        case description
+        case focus
+    }
+}

Packages/Pachyderm/Sources/Pachyderm/Model/Hashtag.swift

@@ -64,6 +64,6 @@ extension Hashtag: Equatable, Hashable {
     }
     
     public func hash(into hasher: inout Hasher) {
-        hasher.combine(url)
+        hasher.combine(name)
     }
 }

Packages/Pachyderm/Sources/Pachyderm/Model/Mention.swift

@@ -24,6 +24,13 @@ public struct Mention: Codable, Sendable {
         self.url = try container.decode(WebURL.self, forKey: .url)
     }
     
+    public init(url: WebURL, username: String, acct: String, id: String) {
+        self.url = url
+        self.username = username
+        self.acct = acct
+        self.id = id
+    }
+    
     private enum CodingKeys: String, CodingKey {
         case url
         case username

Packages/Pachyderm/Sources/Pachyderm/Model/Notification.swift

@@ -30,9 +30,7 @@ public struct Notification: Decodable, Sendable {
     }
 
     public static func dismiss(id notificationID: String) -> Request<Empty> {
-        return Request<Empty>(method: .post, path: "/api/v1/notifications/dismiss", body: ParametersBody([
-                "id" => notificationID
-            ]))
+        return Request<Empty>(method: .post, path: "/api/v1/notifications/\(notificationID)/dismiss")
     }
     
     private enum CodingKeys: String, CodingKey {

Packages/Pachyderm/Sources/Pachyderm/Model/Poll.swift

@@ -24,6 +24,20 @@ public struct Poll: Codable, Sendable {
         expired || (expiresAt != nil && expiresAt! < Date())
     }
     
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.container(keyedBy: CodingKeys.self)
+        self.id = try container.decode(String.self, forKey: .id)
+        self.expiresAt = try container.decodeIfPresent(Date.self, forKey: .expiresAt)
+        self.expired = try container.decode(Bool.self, forKey: .expired)
+        self.multiple = try container.decode(Bool.self, forKey: .multiple)
+        self.votesCount = try container.decode(Int.self, forKey: .votesCount)
+        self.votersCount = try container.decodeIfPresent(Int.self, forKey: .votersCount)
+        self.voted = try container.decodeIfPresent(Bool.self, forKey: .voted)
+        self.ownVotes = try container.decodeIfPresent([Int].self, forKey: .ownVotes)
+        self.options = try container.decode([Poll.Option].self, forKey: .options)
+        self.emojis = try container.decodeIfPresent([Emoji].self, forKey: .emojis) ?? []
+    } 
+    
     public static func vote(_ pollID: String, choices: [Int]) -> Request<Poll> {
         return Request<Poll>(method: .post, path: "/api/v1/polls/\(pollID)/votes", body: FormDataBody("choices" => choices, nil))
     }

Packages/Pachyderm/Sources/Pachyderm/Model/Protocols/AccountProtocol.swift

@@ -9,7 +9,6 @@
 import Foundation
 
 public protocol AccountProtocol {
-    associatedtype Account: AccountProtocol
     
     var id: String { get }
     var username: String { get }
@@ -27,7 +26,7 @@ public protocol AccountProtocol {
     var moved: Bool? { get }
     var bot: Bool? { get }
 
-    var movedTo: Account? { get }
+    var movedTo: Self? { get }
     var emojis: [Emoji] { get }
     var fields: [Pachyderm.Account.Field] { get }
 }

Packages/Pachyderm/Sources/Pachyderm/Model/Protocols/RelationshipProtocol.swift

@@ -0,0 +1,21 @@
+//
+//  RelationshipProtocol.swift
+//  Pachyderm
+//
+//  Created by Shadowfacts on 3/26/23.
+//
+
+import Foundation
+
+public protocol RelationshipProtocol {
+    var accountID: String { get }
+    var following: Bool { get }
+    var followedBy: Bool { get }
+    var blocking: Bool { get }
+    var muting: Bool { get }
+    var mutingNotifications: Bool { get }
+    var followRequested: Bool { get }
+    var domainBlocking: Bool { get }
+    var showingReblogs: Bool { get }
+    var endorsed: Bool { get }
+}

Packages/Pachyderm/Sources/Pachyderm/Model/Protocols/StatusProtocol.swift

@@ -25,7 +25,7 @@ public protocol StatusProtocol {
 //    var favourited: Bool { get }
     var sensitive: Bool { get }
     var spoilerText: String { get }
-    var visibility: Pachyderm.Status.Visibility { get }
+    var visibility: Visibility { get }
     var applicationName: String? { get }
     var pinned: Bool? { get }
     var bookmarked: Bool? { get }

Packages/Pachyderm/Sources/Pachyderm/Model/Relationship.swift

@@ -8,8 +8,8 @@
 
 import Foundation
 
-public struct Relationship: Decodable, Sendable {
-    public let id: String
+public struct Relationship: RelationshipProtocol, Decodable, Sendable {
+    public let accountID: String
     public let following: Bool
     public let followedBy: Bool
     public let blocking: Bool
@@ -18,7 +18,21 @@ public struct Relationship: Decodable, Sendable {
     public let followRequested: Bool
     public let domainBlocking: Bool
     public let showingReblogs: Bool
-    public let endorsed: Bool?
+    public let endorsed: Bool
+    
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.container(keyedBy: CodingKeys.self)
+        self.accountID = try container.decode(String.self, forKey: .id)
+        self.following = try container.decode(Bool.self, forKey: .following)
+        self.followedBy = try container.decode(Bool.self, forKey: .followedBy)
+        self.blocking = try container.decode(Bool.self, forKey: .blocking)
+        self.muting = try container.decode(Bool.self, forKey: .muting)
+        self.mutingNotifications = try container.decode(Bool.self, forKey: .mutingNotifications)
+        self.followRequested = try container.decode(Bool.self, forKey: .followRequested)
+        self.domainBlocking = try container.decode(Bool.self, forKey: .domainBlocking)
+        self.showingReblogs = try container.decode(Bool.self, forKey: .showingReblogs)
+        self.endorsed = try container.decodeIfPresent(Bool.self, forKey: .endorsed) ?? false
+    }
     
     private enum CodingKeys: String, CodingKey {
         case id

Packages/Pachyderm/Sources/Pachyderm/Model/Status.swift

@@ -41,6 +41,7 @@ public final class Status: StatusProtocol, Decodable, Sendable {
     public let poll: Poll?
     // Hometown, Glitch only
     public let localOnly: Bool?
+    public let editedAt: Date?
     
     public var applicationName: String? { application?.name }
     
@@ -48,14 +49,23 @@ public final class Status: StatusProtocol, Decodable, Sendable {
         let container = try decoder.container(keyedBy: CodingKeys.self)
         self.id = try container.decode(String.self, forKey: .id)
         self.uri = try container.decode(String.self, forKey: .uri)
+        do {
             self.url = try container.decodeIfPresent(WebURL.self, forKey: .url)
+        } catch {
+            let s = try? container.decode(String.self, forKey: .url)
+            if s == "" {
+                self.url = nil
+            } else {
+                throw DecodingError.dataCorrupted(.init(codingPath: container.codingPath + [CodingKeys.url], debugDescription: "Could not decode URL '\(s ?? "<failed to decode string>")'", underlyingError: error))
+            }
+        }
         self.account = try container.decode(Account.self, forKey: .account)
         self.inReplyToID = try container.decodeIfPresent(String.self, forKey: .inReplyToID)
         self.inReplyToAccountID = try container.decodeIfPresent(String.self, forKey: .inReplyToAccountID)
         self.reblog = try container.decodeIfPresent(Status.self, forKey: .reblog)
         self.content = try container.decode(String.self, forKey: .content)
         self.createdAt = try container.decode(Date.self, forKey: .createdAt)
-        self.emojis = try container.decode([Emoji].self, forKey: .emojis)
+        self.emojis = try container.decodeIfPresent([Emoji].self, forKey: .emojis) ?? []
         self.reblogsCount = try container.decode(Int.self, forKey: .reblogsCount)
         self.favouritesCount = try container.decode(Int.self, forKey: .favouritesCount)
         self.reblogged = try container.decodeIfPresent(Bool.self, forKey: .reblogged)
@@ -63,7 +73,7 @@ public final class Status: StatusProtocol, Decodable, Sendable {
         self.muted = try container.decodeIfPresent(Bool.self, forKey: .muted)
         self.sensitive = try container.decode(Bool.self, forKey: .sensitive)
         self.spoilerText = try container.decode(String.self, forKey: .spoilerText)
-        if let visibility = try? container.decode(Status.Visibility.self, forKey: .visibility) {
+        if let visibility = try? container.decode(Visibility.self, forKey: .visibility) {
             self.visibility = visibility
             self.localOnly = try container.decodeIfPresent(Bool.self, forKey: .localOnly)
         } else if let s = try? container.decode(String.self, forKey: .visibility),
@@ -83,6 +93,7 @@ public final class Status: StatusProtocol, Decodable, Sendable {
         self.bookmarked = try container.decodeIfPresent(Bool.self, forKey: .bookmarked)
         self.card = try container.decodeIfPresent(Card.self, forKey: .card)
         self.poll = try container.decodeIfPresent(Poll.self, forKey: .poll)
+        self.editedAt = try container.decodeIfPresent(Date.self, forKey: .editedAt)
     }
     
     public static func getContext(_ statusID: String) -> Request<ConversationContext> {
@@ -154,6 +165,14 @@ public final class Status: StatusProtocol, Decodable, Sendable {
         return Request<Status>(method: .post, path: "/api/v1/statuses/\(statusID)/unmute")
     }
     
+    public static func source(_ statusID: String) -> Request<StatusSource> {
+        return Request(method: .get, path: "/api/v1/statuses/\(statusID)/source")
+    }
+    
+    public static func history(_ statusID: String) -> Request<[StatusEdit]> {
+        return Request(method: .get, path: "/api/v1/statuses/\(statusID)/history")
+    }
+    
     private enum CodingKeys: String, CodingKey {
         case id
         case uri
@@ -184,15 +203,7 @@ public final class Status: StatusProtocol, Decodable, Sendable {
         case card
         case poll
         case localOnly = "local_only"
-    }
-}
-
-extension Status {
-    public enum Visibility: String, Codable, CaseIterable, Sendable {
-        case `public`
-        case unlisted
-        case `private`
-        case direct
+        case editedAt = "edited_at"
     }
 }
 

Packages/Pachyderm/Sources/Pachyderm/Model/StatusEdit.swift

@@ -0,0 +1,38 @@
+//
+//  StatusEdit.swift
+//  Pachyderm
+//
+//  Created by Shadowfacts on 5/11/23.
+//
+
+import Foundation
+
+public struct StatusEdit: Decodable {
+    public let content: String
+    public let spoilerText: String
+    public let sensitive: Bool
+    public let createdAt: Date
+    public let account: Account
+    public let poll: Poll?
+    public let attachments: [Attachment]
+    public let emojis: [Emoji]
+    
+    enum CodingKeys: String, CodingKey {
+        case content
+        case spoilerText = "spoiler_text"
+        case sensitive
+        case createdAt = "created_at"
+        case account = "account"
+        case poll
+        case attachments = "media_attachments"
+        case emojis
+    }
+    
+    public struct Poll: Decodable {
+        public let options: [Option]
+        
+        public struct Option: Decodable {
+            public let title: String
+        }
+    }
+}

Packages/Pachyderm/Sources/Pachyderm/Model/StatusSource.swift

@@ -0,0 +1,20 @@
+//
+//  StatusSource.swift
+//  Pachyderm
+//
+//  Created by Shadowfacts on 5/10/23.
+//
+
+import Foundation
+
+public struct StatusSource: Decodable {
+    public let id: String
+    public let text: String
+    public let spoilerText: String
+    
+    enum CodingKeys: String, CodingKey {
+        case id
+        case text
+        case spoilerText = "spoiler_text"
+    }
+}

Packages/Pachyderm/Sources/Pachyderm/Model/Timeline.swift

@@ -38,6 +38,8 @@ extension Timeline {
             request.queryParameters.append("local" => true)
         }
         request.range = range
+        // 206 can happen when the timeline is being regenerated and therefore is incomplete
+        request.additionalAcceptableHTTPCodes = [206]
         return request
     }
 }

Packages/Pachyderm/Sources/Pachyderm/Model/Visibility.swift

@@ -1,16 +1,33 @@
 //
-//  Visibility+String.swift
-//  Tusker
+//  Visibility.swift
+//  Pachyderm
 //
-//  Created by Shadowfacts on 8/29/18.
-//  Copyright © 2018 Shadowfacts. All rights reserved.
+//  Created by Shadowfacts on 3/7/23.
 //
 
-import Pachyderm
-import UIKit
+import Foundation
 
-extension Status.Visibility {
+public enum Visibility: String, Sendable, Codable, CaseIterable, Comparable {
+    case `public`
+    case unlisted
+    case `private`
+    case direct
     
+    public static func < (lhs: Visibility, rhs: Visibility) -> Bool {
+        switch (lhs, rhs) {
+        case (.direct, .public), (.private, .public), (.unlisted, .public):
+            return true
+        case (.direct, .unlisted), (.private, .unlisted):
+            return true
+        case (.direct, .private):
+            return true
+        default:
+            return false
+        }
+    }
+}
+
+public extension Visibility {
     var displayName: String {
         switch self {
         case .public:
@@ -62,20 +79,4 @@ extension Status.Visibility {
             return "envelope"
         }
     }
-    
-}
-
-extension Status.Visibility: Comparable {
-    public static func < (lhs: Pachyderm.Status.Visibility, rhs: Pachyderm.Status.Visibility) -> Bool {
-        switch (lhs, rhs) {
-        case (.direct, .public), (.private, .public), (.unlisted, .public):
-            return true
-        case (.direct, .unlisted), (.private, .unlisted):
-            return true
-        case (.direct, .private):
-            return true
-        default:
-            return false
-        }
-    }
 }

Packages/Pachyderm/Sources/Pachyderm/Request/Endpoint.swift

@@ -33,8 +33,13 @@ public struct Endpoint: ExpressibleByStringInterpolation, CustomStringConvertibl
             switch $0 {
             case .literal(let s):
                 return s
+            #if DEBUG
+            case .interpolated(let s):
+                return s
+            #else
             case .interpolated(_):
                 return "<redacted>"
+            #endif
             }
         }.joined(separator: "")
     }

Packages/Pachyderm/Sources/Pachyderm/Request/Request.swift

@@ -13,6 +13,7 @@ public struct Request<ResultType: Decodable>: Sendable {
     let endpoint: Endpoint
     let body: Body
     var queryParameters: [Parameter]
+    var additionalAcceptableHTTPCodes: [Int] = []
     
     init(method: Method, path: Endpoint, body: Body = EmptyBody(), queryParameters: [Parameter] = []) {
         self.method = method

Packages/Pachyderm/Sources/Pachyderm/Utilities/CollapseState.swift

@@ -12,6 +12,7 @@ import Foundation
 public final class CollapseState: Sendable {
     public var collapsible: Bool?
     public var collapsed: Bool?
+    public var statusPropertiesHash: Int?
 
     public var unknown: Bool {
         collapsible == nil || collapsed == nil
@@ -23,7 +24,9 @@ public final class CollapseState: Sendable {
     }
     
     public func copy() -> CollapseState {
-        return CollapseState(collapsible: self.collapsible, collapsed: self.collapsed)
+        let new = CollapseState(collapsible: self.collapsible, collapsed: self.collapsed)
+        new.statusPropertiesHash = self.statusPropertiesHash
+        return new
     }
     
     public func hash(into hasher: inout Hasher) {

Packages/Pachyderm/Sources/Pachyderm/Utilities/NotificationGroup.swift

@@ -8,24 +8,16 @@
 
 import Foundation
 
-public struct NotificationGroup: Identifiable, Hashable {
+public struct NotificationGroup: Identifiable, Hashable, Sendable {
     public private(set) var notifications: [Notification]
     public let id: String
     public let kind: Notification.Kind
-    public let statusState: CollapseState?
 
-    @MainActor
-    init?(notifications: [Notification]) {
+    public init?(notifications: [Notification]) {
         guard !notifications.isEmpty else { return nil }
         self.notifications = notifications
         self.id = notifications.first!.id
         self.kind = notifications.first!.kind
-        switch kind {
-        case .mention, .status:
-            self.statusState = .unknown
-        default:
-            self.statusState = nil
-        }
     }
     
     public static func ==(lhs: NotificationGroup, rhs: NotificationGroup) -> Bool {

Packages/Pachyderm/Tests/PachydermTests/NotificationGroupTests.swift

@@ -8,6 +8,7 @@
 import XCTest
 @testable import Pachyderm
 
+@MainActor
 class NotificationGroupTests: XCTestCase {
     
     let decoder: JSONDecoder = {

Packages/Pachyderm/Tests/PachydermTests/StatusTests.swift

@@ -0,0 +1,53 @@
+//
+//  StatusTests.swift
+//  
+//
+//  Created by Shadowfacts on 5/8/23.
+//
+
+import XCTest
+@testable import Pachyderm
+
+final class StatusTests: XCTestCase {
+
+    func testDecode() {
+        let data = """
+{
+    "id": "1",
+    "uri": "https://example.com/a/1",
+    "url": "",
+    "account": {
+        "id": "2",
+        "username": "a",
+        "acct": "a",
+        "display_name": "",
+        "locked": false,
+        "created_at": 0,
+        "followers_count": 0,
+        "following_count": 0,
+        "statuses_count": 0,
+        "note": "",
+        "url": "https://example.com/a"
+    },
+    "content": "",
+    "created_at": 0,
+    "emojis": [],
+    "reblogs_count": 0,
+    "favourites_count":  0,
+    "sensitive": false,
+    "spoiler_text": "",
+    "visibility": "public",
+    "media_attachments": [],
+    "mentions": [],
+    "tags": []
+}
+""".data(using: .utf8)!
+        do {
+            _ = try JSONDecoder().decode(Status.self, from: data)
+        } catch {
+            print(error)
+            XCTFail()
+        }
+    }
+    
+}

Packages/TuskerComponents/.gitignore

@@ -0,0 +1,9 @@
+.DS_Store
+/.build
+/Packages
+/*.xcodeproj
+xcuserdata/
+DerivedData/
+.swiftpm/config/registries.json
+.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
+.netrc

Packages/TuskerComponents/Package.swift

@@ -0,0 +1,31 @@
+// swift-tools-version: 5.7
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "TuskerComponents",
+    platforms: [
+        .iOS(.v15),
+    ],
+    products: [
+        // Products define the executables and libraries a package produces, and make them visible to other packages.
+        .library(
+            name: "TuskerComponents",
+            targets: ["TuskerComponents"]),
+    ],
+    dependencies: [
+        // Dependencies declare other packages that this package depends on.
+        // .package(url: /* package url */, from: "1.0.0"),
+    ],
+    targets: [
+        // Targets are the basic building blocks of a package. A target can define a module or a test suite.
+        // Targets can depend on other targets in this package, and on products in packages this package depends on.
+        .target(
+            name: "TuskerComponents",
+            dependencies: []),
+        // .testTarget(
+        //     name: "TuskerComponentsTests",
+        //     dependencies: ["TuskerComponents"]),
+    ]
+)

Packages/TuskerComponents/README.md

@@ -0,0 +1,3 @@
+# TuskerComponents
+
+A description of this package.

Packages/TuskerComponents/Sources/TuskerComponents/AbbreviatedTimeAgoFormatStyle.swift

@@ -0,0 +1,70 @@
+//
+//  AbbreviatedTimeAgoFormatStyle.swift
+//  
+//
+//  Created by Shadowfacts on 4/9/23.
+//
+
+import Foundation
+
+public struct AbbreviatedTimeAgoFormatStyle: FormatStyle {
+    public typealias FormatInput = Date
+    public typealias FormatOutput = String
+    
+    public func format(_ value: Date) -> String {
+        let (amount, component) = timeAgo(value: value)
+        
+        switch component {
+        case .year:
+            return "\(amount)y"
+        case .month:
+            return "\(amount)mo"
+        case .weekOfYear:
+            return "\(amount)w"
+        case .day:
+            return "\(amount)d"
+        case .hour:
+            return "\(amount)h"
+        case .minute:
+            return "\(amount)m"
+        case .second:
+            if amount >= 3 {
+                return "\(amount)s"
+            } else {
+                return "Now"
+            }
+        default:
+            fatalError("Unexpected component: \(component)")
+        }
+    }
+    
+    private static let unitFlags = Set<Calendar.Component>([.second, .minute, .hour, .day, .weekOfYear, .month, .year])
+    
+    private func timeAgo(value: Date) -> (Int, Calendar.Component) {
+        let calendar = NSCalendar.current
+        let components = calendar.dateComponents(Self.unitFlags, from: value, to: Date())
+        
+        if components.year! >= 1 {
+            return (components.year!, .year)
+        } else if components.month! >= 1 {
+            return (components.month!, .month)
+        } else if components.weekOfYear! >= 1 {
+            return (components.weekOfYear!, .weekOfYear)
+        } else if components.day! >= 1 {
+            return (components.day!, .day)
+        } else if components.hour! >= 1 {
+            return (components.hour!, .hour)
+        } else if components.minute! >= 1 {
+            return (components.minute!, .minute)
+        } else {
+            return (components.second!, .second)
+        }
+    }
+
+}
+
+public extension FormatStyle where Self == AbbreviatedTimeAgoFormatStyle {
+    static var abbreviatedTimeAgo: Self {
+        Self()
+    }
+}

Packages/TuskerComponents/Sources/TuskerComponents/AlertWithData.swift

@@ -1,6 +1,6 @@
 //
 //  AlertWithData.swift
-//  Tusker
+//  TuskerComponents
 //
 //  Created by Shadowfacts on 11/9/22.
 //  Copyright © 2022 Shadowfacts. All rights reserved.
@@ -39,7 +39,7 @@ struct AlertWithData<Data, A: View, M: View>: ViewModifier {
 }
 
 extension View {
-    func alertWithData<Data, A: View, M: View>(_ title: LocalizedStringKey, data: Binding<Data?>, @ViewBuilder actions: @escaping (Data) -> A, @ViewBuilder message: @escaping (Data) -> M) -> some View {
+    public func alertWithData<Data, A: View, M: View>(_ title: LocalizedStringKey, data: Binding<Data?>, @ViewBuilder actions: @escaping (Data) -> A, @ViewBuilder message: @escaping (Data) -> M) -> some View {
         modifier(AlertWithData(title: title, data: data, actions: actions, message: message))
     }
 }

Packages/TuskerComponents/Sources/TuskerComponents/AvatarImageView.swift

@@ -0,0 +1,66 @@
+//
+//  AvatarImageView.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 3/4/23.
+//
+
+import SwiftUI
+
+public struct AvatarImageView: View {
+    public typealias FetchAvatar = (URL) async -> UIImage?
+    
+    let url: URL?
+    let size: CGFloat
+    let style: Style
+    let fetchAvatar: FetchAvatar
+    @State private var image: UIImage?
+    
+    public init(url: URL?, size: CGFloat, style: Style, fetchAvatar: @escaping FetchAvatar) {
+        self.url = url
+        self.size = size
+        self.style = style
+        self.fetchAvatar = fetchAvatar
+    }
+    
+    public var body: some View {
+        imageView
+            .resizable()
+            .frame(width: size, height: size)
+            .clipShape(RoundedRectangle(cornerRadius: style.cornerRadiusFraction * size, style: .continuous))
+            .task { @MainActor in
+                image = nil
+                if let url {
+                    image = await fetchAvatar(url)
+                }
+            }
+            // tell swiftui that this view has changed (and therefore the task needs to re-run) when the url changes
+            .id(url)
+        
+    }
+    
+    private var imageView: Image {
+        if let image {
+            return Image(uiImage: image)
+        } else {
+            return placeholder
+        }
+    }
+    
+    private var placeholder: Image {
+        Image(systemName: style == .roundRect ? "person.crop.square" : "person.crop.circle")
+    }
+    
+    public enum Style: Equatable {
+        case roundRect, circle
+        
+        var cornerRadiusFraction: CGFloat {
+            switch self {
+            case .roundRect:
+                return 0.1
+            case .circle:
+                return 0.5
+            }
+        }
+    }
+}